Yamaha SRX440 1980 Service Manual page 7

1980 SRX440
1-2. MACHINE IDENTIFICATION
A. Frame serial number
The frame serial number is located on the
righthand side of frame (just below the front
of seat). The first three digits identify the
model. This is followed by a dash. The re-
maining digits identify the production
number of the unit.
B. Engine serial number
The engine serial number is located on the
right-hand side of crankcase cover. The pre-
fix indicates engine type and displacement.
The prefix is followed by a dash and the
SEl-
rial number. Normally both frame and engine
serial numbers are identical; however, on
occasion they may be two or three numbers
off.
Frame starting serial number 8K6-015101 Engine starting serial number
1-3. MAINTENANCE INTERVALS CHARTS
A. Periodic maintenance
(Use this just as guide only. Certain conditions may require more frequent inspection of compo-
nents.)
Every
..
20 hrs. or 40 hrs. or 80 hrs. or
When
Seasonally
Check point
400km aOOkm 1,600 km
necessary
(250mi)
(500
mil
(1.000mi)
ENGINE:
Tightness of bolts and nuts 0
0
Bends, cracks and wear 0 0
Abnormal noise
0 0
Loose connection and breaks of fuel and pulse pipes
0 0
Loose connection and breaks of oil pipes 0
0
Loose connection and breaks of oil delivery pipe 0
0
Manual rope starter system 0
0
Carburetor
•
Operation of starter jet 0
0
•
Mixing adjuster (pilot screw)
0 0
•
Idling speed adjustment
0 0
•
Throttle valve synchronization 0
0
Operation and adjustment of oil pump 0
0
Ignition timing
0
Engine compressions 0
0
Cylinder head/exhaust pipe decarbonize
0
Spark plug condition, gap and cleaning 0
0
Tightening of the cylinder head •• 0
"'. Retighten every 10 hours from the first use.
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