Maintenance Schedule

There is no single factory schedule that spans 1969 to 1995. BMW's published intervals changed with the models, and the only one reproduced verbatim and verifiable today is the /5 booklet — a two-tier 3,000-mile minor and 6,000-mile major service. Everything after that has to be assembled from the factory literature that survives, the independent authorities, and five decades of what actually went wrong.

So this chapter gives you both columns. Where BMW and Robert Fleischer disagree — and they disagree often — you get both figures and the reason. Where the factory schedule is simply silent on something that destroys airheads, that is called out, because the most consequential item on the whole ladder does not appear in any factory service booklet at all: the transmission input splines.

Two structural warnings. First, several of the items below are governed by time, not mileage — brake fluid, fork oil, fuel line, tyres, battery — and those are the ones a low-mileage bike misses entirely. Second, every interval here assumes moderate use. Sidecar, trailer, heat, dust or a diet of short trips moves most of them earlier, and the ladder says where.

Every figure on this page resolves to one model and year in the book. Pick your bike and the rows that apply to it come forward, with the rest marked.

Open this chapter in the book

Pre-ride & pre-tour

Item	Interval	Factory	Applies	Why it is on the list
Engine oil level	every ride	every ride	All	Airheads use oil and leak oil. Check on the centre stand.
Tyre pressures	every ride	every ride	All	Cold. See the pressures table below — the 1970s placard figures are too low for modern tyres.
Cables — look-see for fraying	every ride	—	All	A broken strand today is a stranding next month.
Lamps — operation and sagging filaments	every ride	—	All	Airhead vibration kills filaments; a sagging one is about to go.
All four oil levels	pre-tour	—	All	Engine, transmission, driveshaft housing, rear drive. Paralever has no shaft-housing oil.
Cable barrel ends — lubricate	pre-tour, and after every wash	—	All	Moly-containing oil. Note: barrel ends only — see the cable-lubrication conflict below.
Clutch adjustment — check the transmission nut is not loose	pre-tour	—	All	It backs off, and you find out at a junction.
Battery load test	every 6 months	—	All	Voltage alone tells you almost nothing. Load test.

The mileage ladder

Item	Recommended	Factory (/5)		Applies	Notes
Engine oil	5,000 mi or 1 year	3,000 mi / 6 mo	winter: 1,500 mi / 3 mo	All	Whichever comes first — the year is not optional. Short-trip commuting: ~3,500 mi. The factory figure is shorter here; modern oil is why the recommendation moved out.
Oil filter	every other oil change	every oil change		All	Genuine BMW filters, new O-rings each time. The 44 × 4 mm high-pressure O-ring 11-42-1-337-098 is never reused.
Valve clearances (incl. rocker end float)	5,000 mi or yearly	6,000 mi	1981–84: check far more often	All	Airhead exhaust valves recede and clearances close up. A tight exhaust valve is the documented burnt-valve mechanism. After a rebuild: ~100 mi, ~600 mi, ~2,000 mi, then settle into the 5,000 rhythm.
Points — gap, cam grease, timing, ATU	5,000 mi	inspect 3,000 & 6,000		'70–'80	Nothing to do on '81+ Hall systems.
Carb synchronisation	5,000 mi	—		All	After a minimum 10-mile ride — cold sync is meaningless.
Bing enrichener — 4 screws for tightness & gasket	5,000 mi	—		Bing CV	Loose = a lean-out and, occasionally, a fire.
Speedo cable boot, right rear of gearbox	5,000 mi	—		All	Water gets in here and the gearbox oil comes out looking like creamed coffee. Seal with black RTV; do not use zip ties.
Nut & bolt check	5,000 mi	—		All
Air filter — clean	10,000 mi	clean at 3,000 & 6,000		All	Replace on condition, ~30,000 mi typical. Stock filters often go well beyond that in clean conditions.
Transmission, driveshaft housing & rear drive oil	10,000 mi — factory	and at least once a year	heavy load, heat or dust: 5,000	All	BMW-TD77 All three change at every Inspection — 15,000 km (10,000 miles) — with the schedule footnote “at least once a year”. Sidecar, trailer or hot-and-dusty use pulls this in to 5,000. The 15,000-mile extension for full synthetic is this guide's position, not BMW's — BMW's schedule makes no allowance for oil type.
Transmission input splines — clean & re-lube	15,000 mi	not in the factory schedule	do not exceed 18,000	All to ~1993/94	The single most consequential airhead interval, and BMW never published it. Roughly double for later nickel-plated shafts — though that plating date is itself disputed. See the Splines chapter.
Swingarm bearings — service	15–20,000 mi	—		All	Re-grease through the pivot adjusters roughly twice a year in between.
Alternator brushes — visual check	15–20,000 mi	—		All	Confirm the snail springs are not bottoming.
U-joint bolts at the transmission flange	15–20,000 mi, and yearly	—		All	Check at 26 ±2 ft-lb without loosening first. Push the accordion boot back. These backing out has torn the rear off a gearbox.
Spark plugs — replace	15–30,000 mi	inspect 3,000		All	30,000 is realistic on unleaded.
Clutch lever bush, throwout parts, bar levers, enrichener control, rear brake lever — clean & lube	15–20,000 mi	—		All	Check the nylon bushing at the bar lever for wear while you are there.
Fork oil	10,000 mi — factory	and at least once a year	factory interval, not a 2-year cap	/7 documented; treat as All	BMW-TD77 Corrected from the 2-year figure this guide used to print. BMW's /7 schedule changes the fork oil at every Inspection — 15,000 km (10,000 miles) — and the schedule's own footnote adds “at least once a year”. That is more frequent than the two-year cap widely quoted in the community, including by earlier revisions of this guide. Amounts are strongly model-dependent — see Capacities & Fluids.
Steering head bearings — clean, grease, adjust	30,000 mi	—		All	Sources split between 30,000 mi and 50,000 mi / 4 years. Cleaning and regreasing often cures the "notchy" feel that seems to demand new bearings.
Carburettor floats & float needles	30,000 mi	—		stock original floats	Always replace the needles at the same time.
Carburettor slide needles	30,000 mi	—		aluminium type
Carb diaphragms — replace	60,000 mi	—		Bing CV	During the carb overhaul. Perished diaphragms are a top-three airhead running complaint.
Front forks — overhaul	60,000 mi	—		All	Usually mostly cleaning and new bumpers.
All control cables — replace	60,000 mi	—		All	Keep the old ones on the bike as emergency spares if still sound.
Timing chain, guides, tensioner, oil relief spring	80–100,000 mi	—		All	Possibly one or both sprockets. Fit the latest-version tensioner and guide.
Compression / leak-down test	80–100,000 mi	—		All	Leads to the valve job, guides, decoke and rings decision. Thresholds are model-specific — see General & Tune.
Starter motor — overhaul	80–100,000 mi	—		All
Transmission — overhaul	80–100,000 mi	—		All
Oil pan, screen and pickup — clean	once, at any oil change	—		All	A do-it-once item. Blue medium-strength threadlocker on the internal bolts.

Time-based — the items a low-mileage bike misses

Item	Interval	Limit		Applies	Notes
Brake fluid	yearly — factory	no BMW schedule permits 3 years	time, not mileage	All disc models	DOT 4 (DOT 3 acceptable). Never DOT 5 silicone in a BMW. Hygroscopic — the boiling point falls and the internals corrode whether you ride or not. Bleed the rear caliper unbolted with the bleeder port vertical. Annual is BMW's own recommendation. BMW-TD77 The /7 owner literature says it in bold: “We also recommend that you change the brake fluid once each year.” Note where it sits — the maintenance-schedule table itself lists only check brake fluid level; the annual change appears in the Service text alongside the advice to have two Inspections a year. The 24- and 36-month figures circulating in the community are shop and owner practice, not a BMW allowance. BMW-WSM7 §34 Fluid spec by sheet: 12.77 prints DOT 3; the ’79 and 1981 sheets print ATE “DOT 4 SL”. DOT 4 has been the factory call since 1979 — not a modern retrofit.
Fork oil	yearly	or 10,000 mi	BMW factory interval	All	BMW-TD77 Annual is the factory footnote, not a conservative add-on. Replace sooner if dark.
Engine oil	1 year	5,000 mi	factory: 6 months	All	Acid and condensation do not care about mileage.
Fuel lines	~2 years	—	inspect every ride	All	Ethanol shortens the life of the old rubber hose sharply. Nitrile deteriorates in alcohol; EPDM does not stand up to petrol long-term. BMW black DIN hose 13-11-1-338-115 (6 mm ID × 11 mm OD); Tygon F-4040A is widely reported as the best-lasting alternative. Hose clamps on the fuel lines are a pre-purchase red flag.
Tyres — by age	5–6 years in service	this guide: buy none over 3 years old	maker guidance varies	All	Tyre makers do not agree on a single age limit and several publish none at all — treat 5–6 years as common industry guidance rather than a rule, and check what your tyre maker actually says. “Nothing over three years old at purchase” is this guide's conservative buying preference, not a manufacturer requirement. DOT code is a 4-digit week/year on the sidewall — "1016" is week 10 of 2016. Age and tread depth are separate tests.
Battery	4–7 years	load test every 6 months		All	Replace on tested performance, not on age alone. Quality flooded: 5 years, declining toward 8. AGM: 5–8, sometimes longer.
Rubber brake hoses & grommets	15–20 years	—	test by feel under hard lever pressure	All disc models	No bulging. Some straightening under pressure is normal. Storage conditions dominate — sources are more permissive than 15 years for well-kept originals.
Exhaust port finned nuts — anti-seize	every 1–2 years	not in the factory schedule	yearly if lots of short trips	All	Nickel anti-seize on the threads, never oil — oil carbons up and seizes them. Brass-brush first. If a nut suddenly starts to seize on the way out, stop. The alternative is a destroyed cylinder head.
Ignition module heat-sink grease	2 years	3 years maximum		'81+ electronic	Dow Corning Type 340 or equivalent white zinc-based compound. Riveted modules are not serviceable. The module cooks itself without it.
Electrical connections — inspect	yearly (all accessible)	every 3 years minimum		All	Half the charging-system faults on the forums are a connection, not a component.
Rear shocks	5–7 years	—		All	Single-source figure — treat as guidance, not spec.
Swingarm bearings — re-grease	~twice a year	—	more if you ride deep water	All	Through the allen pivot adjusters. Full clean and inspect every few years.

Triggered by a tyre change, not by mileage

Item	When			Applies	Notes
New tube	every tyre change	front and rear		tube-type wheels	Always. All spoked airhead wheels are tube-type unless cross-spoked.
Wheel bearings — clean, grease, check preload	every tyre change	preload at least every 2nd		pre-1985 only	Pre-1985 are greasable tapered rollers (30203-A: 17 mm bore × 40 mm OD × 13.25 mm overall width — the 12 mm often quoted is the inner-ring/cone width, not the assembled bearing). 1985+ are sealed 6005 balls — not serviceable, replace only. R65LS went to balls early. New seals each service. Never moly grease in wheel bearings — it clumps and flakes.
Wheel bearing preload	20–35 in-oz	factory 21–42 in-oz		pre-1985	String on a 1.5 in spacer plus a spring scale. Low end preferred.
Rear wheel splines — inspect, clean, re-grease	every tyre change	check the cup rivets first		Twin-shock	Brush moly grease from the outboard end inward so grit is not pushed into the large drive seal. Monolever and Paralever have no rear wheel splines.
Rear wheel play	every tyre change	shop check ≈0.020 in at the rim	not a factory limit	Monolever · Paralever	This is the large cardan bearing, not splines. 0.020 in is a workshop diagnostic figure, not a BMW specification — the late factory manuals simply instruct you to correct the bearing when play can be felt at all. Use 0.020 in as the point at which wear is clearly accelerating, and perceptible play as the point at which to act.
Brake pads / linings, and the two caliper pins	every tyre change	dry-lube the pins		All	Check for dragging while the wheel is out. Never hang a caliper unsupported by its hose.
Rear brake cam O-rings (drum)	every 2nd tyre change	grease the shaft every change		drum rear, to 1984	From 1985 the rod runs in a tube with no O-rings — still grease the shaft.
Swingarm — adjust and grease	every tyre change	—		All	Through the pivot adjusters. See the Splines chapter for the set–back-off–re-set procedure.

Tyre pressures — cold

Condition	Front	Rear		Applies	Notes
BMW factory — solo	1.9 bar F / 2.0 bar R	≈28 / 29 psi	historical	/7-era · 12.77 sheet	BMW-RA382 Factory wheel-load sheet: the permitted loads are rated at these pressures, cold. Printed here because it is the factory figure, not because it is what to run — a modern carcass on the bike outranks a 1977 table.
BMW factory — two-up or laden	2.0 bar F / 2.25 bar R	≈29 / 33 psi	historical	/7-era · 12.77 sheet	BMW-RA382 Same sheet, with a passenger. Above a sustained 160 km/h both sheets add ~0.2 bar per wheel. Note the booklet's own misprint: the US Technical Data booklet prints the rear solo figure as “2.5 atm (29 psi)”, and 2.5 atm is ≈36 psi — the 2.0 bar here is the reading consistent with both the printed psi and the two-up progression.
BMW factory 1981 — up to 130 km/h	1.9 bar F / 1.8 R	27 / 26 psi	cold · historical	’81 R100-series sheet	BMW-WSM7 §36 The 1981 sheet grades pressure by speed. Pillion: 2.1 / 2.0 bar (30/28).
BMW factory 1981 — 130–160 km/h	1.9 bar F / 2.0 R	27 / 28 psi	cold · historical	’81 R100-series sheet	BMW-WSM7 §36 Pillion: 2.1 / 2.2 bar (30/31).
BMW factory 1981 — above 160 km/h	2.1 bar F / 2.2 R	30 / 31 psi	cold · historical	’81 R100-series sheet	BMW-WSM7 §36 Pillion: 2.1 / 2.3 bar (30/33). Modern-tyre practice above still governs today.
Common airhead starting point	32 psi	38 psi	shop practice — not a factory spec	modern road tyre, solo	A starting point, not a minimum. Nearly every modern tyre wants more pressure than BMW specified for the bias-ply rubber of the era, and 32/38 is the figure the airhead community and most shops start from. What you actually run must follow the tyre maker’s own application and load guidance for that tyre, on that machine, at that load — read the sidewall maximum and the fitment table, then adjust from there.
Solo, sporting pace	35 psi	39 psi		road tyres	Measured cold.
Two-up or loaded touring	35 psi	40–42 psi		road tyres
Factory /5 placard — solo	27 psi	30 psi	period figure — too low today	/5, 3.25 S 19 / 4.00 S 18	Recorded for completeness. Two-up: 30 / 35.
R100GS / R80GS, fully loaded	36 psi	42 psi		GS · PD	Rough off-road surfaces: 32 / 36.
Tubeless tyre fitted with a tube	—	—	follow the tyre & tube maker	tube conversions	A tube adds heat, and both the tyre maker and the tube maker publish their own speed and load restrictions for a tubed fitment — use theirs. The often-repeated “drop one speed-rating grade” is a workshop rule of thumb, not a manufacturer specification, and it does not appear in current Bridgestone guidance.
Bead seating (not riding pressure)	the tyre maker’s stated limit	Bridgestone: never above 40 psi	stand clear	All	There is no universal seating ceiling — use the number the tyre manufacturer prints. Bridgestone’s current motorcycle manual is explicit: “The tire service person must never inflate a tire beyond 40 pounds per square inch (psi) (276 kPa) to seat the beads.” A period BMW service instruction allowed 67 psi, and the old trade habit of 50% over the sidewall maximum is still repeated — both are historical figures, and neither overrides the tyre maker. If a bead will not seat at the stated limit, deflate, re-lubricate and try again; do not chase it with pressure.
Tread depth — service limit	1/32 in · 0.8 mm	at the moulded TWI bar	replace immediately	All	Bridgestone: worn to the built-in indicators at 1/32 in (0.8 mm) or less, or cord/fabric showing, and the tyre is dangerously worn. That is the manufacturer minimum and also the legal minimum in most US states; UK and EU law is 1 mm across the central three-quarters for machines over 50 cc. Tread depth and tyre age are separate tests — check both. BMW-WSM7 §36 BMW’s own 1981 recommendation is stricter than any legal minimum: 2 mm up to 130 km/h, 3 mm above.

Model-specific placards. Per-model factory pressure plates for /6, /7, R65, R80ST, R80RT and R100R could not be verified from a primary source. If your bike has a placard under the seat or on the swingarm, record it — then compare it against the modern-tyre minimum above, and use the higher of the two. The best final test remains how the bike actually handles.

Adjustment specs that live on this schedule

Item	Spec	Alt		Applies	Notes
Clutch free play at the bar lever	≈ 1/2 in	1/2–1 in at initial setup		All	Community standard, not a published BMW figure. The transmission lever should meet the cable at 90°.
Clutch cable barrel to case	201 mm (7.91 in)	~3 mm play at the bar		1981+ clutch	Measured from the forward face of the transmission lever cable barrel. Too far rearward and the clutch rod boot leaks oil; too far forward and you get heavy lever effort and cable wear. Pre-1981 clutches use the older method — do not mix them.
Throttle free play at the sheath	just under 1/8 in	—	check at both bar stops	single-cable	Take out most, but not all, of the sheath free play — then sweep the bars lock to lock and confirm play remains.
Steering head bearing preload	30 ±2 in-lb	350 Ncm ±20 = 29–33 in-lb		All	The torque needed to keep the fork moving after breakaway, top cap fully tight. Factory splits it: drum front ends 1.9 ±0.2 ft-lb, single or dual disc 2.6 ±0.14 ft-lb. Bearing is a tapered 320/28 X (28 × 52 × 16). Expect to readjust after a few hundred miles.
Steering head — the road tests	a small perceptible drag	palm-rap moves the bar ~1 in, not to the stop	too loose: front wobbles at 30–40 mph off-throttle	All	If the front end will not fall freely off centre it is too tight; if you can feel play at the fork it is too loose.
Clutch friction disc thickness	new ≈ 6 mm	official limit 4.5 mm	may not slip until ~3.5 mm	All	If the rest of the clutch is good it will keep working past the official limit — but that is not a plan.
Brake pad minimum	1.5 mm	.06 in	factory limit	disc models	BMW-WSM7 §34 Printed identically on the 12.77, ’79 and 1981 sheets, front and rear. Replacing at ~2 mm remains sensible practice — but the limit is no longer unsourced.
Brake disc minimum thickness	4.6 mm	.181 in	factory limit	factory discs	BMW-WSM7 §34 All three sheets: 4.6 mm minimum — for the 264 mm front (12.77/’79), the 260 mm front (1981) and the 260 mm rear disc alike. If the carrier stamp says otherwise for your disc, the stamp governs.

Fuel octane by compression

Compression	RON needed	US pump (AKI)		Applies	Notes
8.2:1 · 8.45:1	≈ 88 RON	87 regular		R80/7 37 kW · most 800 cc · US '80+ R100	Regular is genuinely adequate here. US-market 1000 cc machines were dropped to 8.2:1 from 1980; other markets and later models differ, and the pre-1980 US /7 range ran 9.0–9.5:1. BMW-TD77
9.0–9.2:1	≈ 94 RON	88–89 mid-grade		R45 · R60 · R65 · R75 · R90/6 · R100/7
9.5:1	≈ 96 RON	91 premium		R90S · high-comp R100	US premium. RON is typically 5–6 above the US AKI pump number.
BMW /7 factory requirement	98 RON min	88 MON · DIN 51600	applies to the whole /7 range	R60/7 – R100RS — with one exception	BMW-TD77 BMW-WSM7 BMW asked for Super (premium), minimum 98 RON / 88 MON across the /7 range — the 9.0:1 R75/7 as well as the 9.5:1 R100RS — which is roughly 93 AKI at a US pump, more than a compression-derived estimate suggests. The exception is the R80/7, which the workshop manual lists as Super (premium) 98 or Regular 91, the 91 figure footnoted “low-compression engine”. So the R80/7 was built in two compression versions and the low one runs on regular. An earlier revision of this guide said 98 RON applied to the whole range without that qualifier.
~10:1 and above	≈ 98+ RON	91 AKI minimum	dual plugs effectively required	modified · big-bore kits	A 9.5:1 kit on an 8.2:1-era bike with the lean '81 US jetting will ping. Premium plus richer jetting, dual-plug heads, or low-compression base gaskets.
Ethanol (E10)	runs leaner	holds ~4 tsp water/gal vs 0.15	attacks old fuel line	All	Alcohol leans a carburetted engine unless you re-jet. Worse fuel mileage, faster hose failure, and water that does not settle out.

Where the factory schedule is not enough. Six items are either absent from BMW's literature or specified at intervals now widely considered too long: spline lubrication (absent entirely, and it destroys gearboxes), brake fluid (absent from the /7 schedule table, which checks level only — but BMW's Service text recommends an annual change, and the community consensus agrees), fork oil (time-governed at 2 years, not the mileage the manual implies), gear oils under load (10,000 assumes moderate use; halve it for sidecar, trailer, heat or dust), exhaust finned nuts (not scheduled at all, and the consequence is a scrapped head), and ignition module heat-sink grease on 1981+ bikes (no factory interval; the module overheats without it).

Conflicts recorded rather than resolved. Cable lubrication: the /5 factory manual lists greasing brake and clutch levers and the throttle grip at every 3,000-mile service; the strongest independent position is that no control cable except the original as-shipped /5 item should ever be internally lubricated, because oil attracts abrasive dirt and may swell the liner — while barrel ends should be lubricated often. Both are given above. GL-5 vs GL-4 gear oil: covered in Sources & Conflicts. Fork oil weight: "approximately SAE 4, never higher than SAE 10 for non-GS models" against a widely repeated community figure of 7–10 weight. Full synthetic in the engine: one authority both discourages it (lifters and rings may not rotate properly) and concedes the engine will do fine on it, with possible seal weeping — an inconsistency he acknowledges himself. Steering head interval: 30,000 mi against 50,000 mi / 4 years, from the same author on two different pages.

Maintenance Schedule

Chapters