Tennant 1550, Manual

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MAINTENANCE
1550 Gas/LPG/Diesel MM283 (2--05)
3--34
VALVE TAPPET CLEARANCE
The valve tappet clearance must be checked after
the first 50 hours of operation and after every 400
hours of operation.
Check and adjust the intake valve tappets to
0.014 in (0.35 mm) clearance and the exhaust
valve tappets to 0.018 in (0.45 mm) clearance
when the engine is warm and is operating at idle
speed.
01473
ADJUSTING VALVE TAPPET CLEARANCE
PCV SYSTEM
Check the PCV system after every 200 hours of
operation. Check all connections. They are to be
airtight. To service the system, clean the PCV
valve and the air inlet. Check all hoses for wear or
plugging.
TUNE-UP CHART -- GASOLINE, LPG
CONTINENTAL ENGINES
(For machines below serial number 001424)
Idle speed, no load 600 + 50 rpm
Maximum governed
speed
2400 + 50 rpm
Spark plug gap, TM27 0.035 in (0.9 mm)
Timing, TM27 gasoline 15
_
BTDC @ 1850
rpm
Timing, TM27 LPG 18
_
BTDC @ 1850
rpm
Firing order 1--3--4--2
Valve clearances, TM27
warm
intake 0.014 in
(0.36 mm)
exhaust 0.018 in
(0.46 mm)
TUNE-UP CHART -- GASOLINE, LPG
GM ENGINES (For machines serial number
001424 and above)
Idle speed, no load (For
machines serial number
001424--001505)
1350 + 50 rpm
Idle speed, no load (For
machines serial number
001508 and above)
950 + 50 rpm
Maximum governed
speed
2400 + 50 rpm
Spark plug gap 0.040 in (1.0 mm)
Timing, gasoline 0
_
@ static
condition*
Timing, LPG 0
_
@ static
condition*
Firing order 1--3--4--2
Valve clearance (Lash) 1/2 to 1 turn down ( ) /
from 0 Lash
* ECU controls engine timing