Maintenance; Periodic Maintenance - Yamaha BR250F Service Manual

1~6. MAINTENANCE
A. Periodic Maintenance
Perform the various inspections and services at the indicated intervals; however use this schedule as
a guide only. Depending upon the operating conditions, certain components may require more fre-
quent servicing.
Every
Check point
20 hrs. or 40 hrs. or 80 hrs. or
When
Seasonally
400 km 800 km 1,600 km
necessary
(2
ENGINE:
Tighteness of bolts and nuts
Bends, cracks, and wear
0
Abnormal noise
0
Loose connection and breaks in the fuel and pulse pipes
0
Loose connection and breaks in the oil pipes
0
Loose connection and breaks in the oil delivery pipe
0
Recoil starter
Carburetor
• Operation of starter jet
0
• Mixing adjuster (pilot screw)
0
• Idle speed adjustment
0
Operation and adjustment of oil pump
Ignition timing
0
Cylinder compression
0
Cylinder/exhaust pipe decarbonize
0
Spark plug condition, gap, and cleaning
0
Tighten the cylinder**
0
DRIVE;
Tightness of bolts and nuts
Wear on slide runners
0
Primary drive system 0
V-belt
()
Secondary drive system 0
Sheave distance 0
Sheave offset =
Brake pad wear 0
Brake operation and adjustment 0
Guide wheel rubber
0
Wear of track drive sprockets
Initial
100 km
I
Drive track adjustment (60mi) & 0
300km
(200mi)
I
Breaks in drive track
0
Bends in front and rear axles
0 j
Check lock washers 0
!
Drive chain adjustment 0
i
Chain case oil level 0
** Retighten every 10 hours from the first use.
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