Maintenance chart
50
ALWAYS COMPLY WITH SAFETY REGULATIONS !
Maintenance
obs
Maintenance
cycles *
1 2 3 4 5 6 7 8 9
Check coolant level and oil level in engine D
Change engine oil in oil sump (see also page 51) D D
Change oil filter cartridge (see also page 51) D D
Check and if necessary correct V-belt tension D D
1st retightening of cylinder head bolts (with overhauled engine) D
Check and if necessary adjust valve clearance D D D
Check that removable unions (bolts, hose clips, pipe fittings) are
firmly in position and, if necessary, retighten
D
2nd retightening of cylinder head bolts
(with new or overhauled engine)
D
Service the air cleaner
(earlier if severe operating conditions demand it)
D
Change spark plugs D
Check ignition timing D
Check compression pressure D
Change distributor rotor and cap D
Check throttle valve shaft bearings in gas mixer for leakages D
Check anti-freeze concentration D
Check pressure drop through gas filter, clean elements, if neces-
sary
D
Check complete gas regulating station and metal hose connection
to gas mixer for gas leakages
D
Change coolant, renew filler cap and working valve of cooling sys-
tem
D
Check gas pressure monitor, isolating valves of gas lock and gas
pressure regulator
D
* 1 – Daily
2 – After the first 10 to 20 hours of operation (with new or overhauled engine)
3 – After the first 400 hours of operation
4 – Every 600 hours of operation *)
5 – Every 2000 hours of operation
6 – Every 6000 hours of operation
7 – Every 3 months
8 – Every 6 months
9 – Yearly
*) Interval to be reviewed on the strength of practical experience.
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