![Fayat Group BOMAG BW 900-50 Service Manual Download Page 58](http://html1.mh-extra.com/html/fayat-group/bomag-bw-900-50/bomag-bw-900-50_service-manual_546898058.webp)
Engine problems
BOMAG
61
008 921 86
6.13
6.13 Engine problems
Fault
Possible cause
Remedy
Engine does not
start
Fuel tank empty
Fill fuel tank
Fuel filter clogged
Change the filter
Fuel lines leaking
Check all line connections for leaks and
tighten the fittings
Emergency stop switch locked
Unlock the emergency stop switch
Driver not seated (seat contact switch)
Occupy the driver's seat when starting.
Travel lever not in neutral position
Return the travel levers to neutral posi-
tion.
Battery not charged or not connected
Charge the battery, check the pole
clamps
Operating error
see section “Starting the engine”
Incorrect valve clearance
Adjust the valve clearance
Lack of oil
Fill up engine oil
Spark plugs defective, soiled, incorrect
electrode gap
Unscrew the spark plugs, check, replace
if necessary
Poor starting of
engine or en-
gine works irreg-
ularly with poor
power
Battery power too low
Have battery checked
Battery pole clamps loose or oxidized,
causing the starter to turn too slow
Clean the pole clamps, tighten and cover
them with acid-free grease
Especially in winter: use of too viscous en-
gine oil
Use an engine oil complying with the am-
bient temperatures
Fuel supply too low, fuel system clogged
Change the fuel filter. Check the line con-
nections for leaks and tighten the fittings.
The specified valve clearance is not cor-
rect
Adjust the valve clearance
Carburettor defective
Have examined by a specialist
Air filter dirty
Clean air filter, change if necessary
Excessive play in throttle cable
Adjust the throttle cable, replace if neces-
sary
Engine looses
power and
speed, exces-
sive exhaust
smoke
Engine oil level too high
Drain the oil down to the top dipstick mark
Poor quality fuel
Use specified fuel
Air filter dirty
Clean air filter, change if necessary
Poor compression due to burned or bro-
ken piston rings or incorrect valve clear-
ance
Have piston rings and pistons examined
by a specialist, adjust the valve clearance
Engine over-
heating, engine
must be shut
down immedi-
ately!
Cooling air inlets heavily soiled
Clean the cooling air inlets
Air filter dirty
Clean air filter, change if necessary
Go
to
Discount-Equipment.com
to
order
your
parts