The "Periodic Maintenance
/ Lubrication Intervals" schedule is taken directly from a 1976 edition Yamaha LB80 II factory service manual.
Before starting any work, always consult
the manual for your scooter's model & year and be sure you know what you're doing.
| Item | Remarks | Type | Initial break-in 1 250 mi (400 km) |
Initial break-in 2
500 mi (800 km) |
Thereafter every
1,000 mi (1,600 km) |
Thereafter every
2,000 mi (3,200 km) |
| Autolube pump | Check and adjust minimum pump stroke. | |||||
| Air filter | Check for clogging. Clean & dampen with oil. | SAE 10W40 type SE motor oil or foam air filter oil | X | X | X | |
| Wheels and Tires | Front 14 psi, Rear 17 psi | Front 4.00 x 8, Rear 4.00 x 8 | X | X | ||
| Fittings and Fasteners | Check and tighten as needed | - | X | X | ||
| Brake system | Adjust free play. Replace shoes if needed | Front EBC501, DP9109 Rear EBC501, EBC519 |
X | X | ||
| Drive chain | Check tension and alignment | Chain lube | X | X | X | X |
| Transmission oil | Warm up engine before draining. | SAE 10W40 type SE motor oil or GL gear oil | Replace | Replace | ||
| Control and meter cables |
Inspect and apply chain lube thoroughly. | Yamaha chain and
cable lube or SAE 10W30 motor oil |
||||
| Throttle grip housing | Light application | Lithium soap based grease | ||||
| Speedometer gear housing | Light application | Lithium soap based grease | ||||
| Brake pedal and center stand pivots | Light application | Standard chassis lube grease | ||||
| Rear arm pivot shaft | Apply grease until it shows | Soft chassis lube | ||||
| Spark Plug | Inspect/Clean or replace as required | NGK B-7HS 0.020 - 0.024 gap |
|
|||
| Front fork | Drain completely | Yamaha fork oil | Check |
Replace |
||
| Point cam lube | Very light application. | Lightweight machine oil |
|
|||
| Front axle | Apply grease lightly. | Lithium soap based grease |
|
|||
| Steering ball races | Check bearings assembly for looseness. Moderately repack at 4,000 mi (6,400 km). | Medium weight wheel bearing grease. | Repack |
|||
| Decarbonize engine | Includes exhaust pipe and head |
|
||||
| Fuel petcock | Clean/flush as needed |
| ||||
| Wheel bearings | Check bearings for smooth rotation. | Medium weight wheel bearing grease |
|
|||
| Ignition Timing | Adjust/clean or replace parts when needed | |||||
| Battery | Check specific gravity and breather pipe for proper operations. | Distilled water 6N4-2A-5 |
|