Chapter 2. Periodic Inspection And Adjustments; Introduction; Maintenance Intervals Charts; Maintenance Intervals - Yamaha QT 50F Service Manual

CHAPTER 2.
PERIODIC INSPECTION AND ADJUSTMENTS
2-1. INTRODUCTION
This chapter includes all information necessary to perform recommended
inspection and adjustment. These preventive maintenance procedures, if
followed, will insure more reliable vehicle operation and a longer service
life. The need for costly overhaul work will be greatly reduced. This infor-
mation applies not only to vehicles already in service, but also to new
vehicles that are being prepared for sale. Any service technician perform-
ing preparation work should be familiar with this entire chapter.
2-2. MAINTENANCE INTERVALS CHARTS
The following charts should be considered strictly as a guide to general
maintenance and lubrication intervals. You must take into consideration
that weather, terrain, geographical location, and a variety of individual
uses. This time schedule should be altered to match individual owners'
requirements. For example, if the motorcycle is continually operated in an
area of high humidity, then all parts must be lubricated much more fre-
quently that shown on the chart to avoid damage caused by water to metal
parts.
A. Mainter
cioj
Cylinder head
Spark plug
Air filter
Carburetor
Autolube purr
* Brake system
* Wheels and t
* Suspension s
Fuel petcock
• Battery
* Lights/Signal
ance Intervals
tern
/Exhaust system
P
(complete)
res
stem
I * Fittings/Fastehers
Remarks
Decarbonize
Inspect/Cleaning or replace as required
Wet type-Must be washed and damped with
Yamalube 2-cycle Oil or SAE 20 motor oil
Check operation/Fittings
Clean/Refit/Adjust
Check/Adjust/Air bleeding
Check/Adjust as required-Repair as required
Check pressure/Wear/Balance/Run out
Check operation/Repair as required
Clean/Flush tank as required
Top-up/Check specific gravity and breather
pipe
Check operation/Replace as required
Tighten before each trip and/or...
•
Initial
1
month
O
O
O
O
O
O
O
O
O
3
months
0
O
O
O
O
O
O
O
O
O
O
O
6
months
O
O
O
O
O
O
O
0
O
O
o
o
o
Unit : km (mi)
Thereafter every
6
months
O
0
O
O
O
3
months
O
O
o
o
o
o
1
year
O
* Indicates pre-operation check items.
2-2