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18. Clutch
If a Petter clutch is fitted it should be adjusted in accordance with the
instructions given under General Maintenance.
19. Daily
(a) Check lubricating oil and top up if necessary
(b) Check that the cooling system is in order and free from obstruction.
(c) If a water pump reservoir is fitted, check that it is full and that the cap is
on
NOTE
The following maintenance recommendations are for average operating
conditions Under very dusty conditions, air cleaners, lubricating oil and fuel
filters will require more frequent attention. Decarbonising may be required
more frequently when engines are running on light load for long periods
20. Every 50 hours
(a) Clean the air cleaner (oil bath type).
21. Every 250 hours
(a) Check all nuts. bolts, etc.. for tightness. (The cylinder head nuts must
NOT be tightened when the engine is hot.)
(b) Make sure the fuel tank filler cap vent hole is clear.
(c) Clean the air cleaner (paper element type).
(d) Clean out deposit from exhaust system.
(e) Drain the sump. flush out with flushing oil and refill with new oil.
(Paraffin may be used if flushing oil is unobtainable but the engine
must not be run with paraffin in the sump )
(f) Check the fuel system for leaks
(g) Check the valve clearance and adjust if necessary.
(h) Fit new lubricating oil filter element and joint ring.
(i) Lubricate the speed control linkage
(j) Lubricate the 4:1 or raised hand starting if fitted.
(k) Grease speed control rod
(l) If fitted, check the water pump impellor and seal for damage and
replace if necessary.
22. Every 500 hours
(a) Fit new air cleaner element (paper element type).
(b) Flush out the cylinder and cylinder head with clean fresh water and
examine the corrosion inhibitor union, if fitted If this shows signs of
deterioration fit a new one. (This is not necessary if cooling tanks are
22
Running maintenance
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