New Holland Speedrower 200, Service Manual

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Engine - Engine and crankcase
Engine - Troubleshooting
Problem Possible Cause Correction
The Engine Does Not Start Battery dead or faulty. Check and recharge battery. Replace bat-
tery if necessary..
Connections to battery terminals corroded
or loose. Clean, examine and tighten the nuts on the
battery terminals. Replace the cable termi-
nals and the nuts if excessively corroded.
Incorrect timing of injection pump. Check and correctly time the injection
pump. See Bosch dealer.
Deposits or water in the fuel tank.
Disconnect the hoses and clean them us-
ing a jet of compressed air. Dismantle and
clean the injection pump. Remove water
from tank and refuel. Drain fuel system.
No fuel in tank. Refuel.
No power supply. Overhaul or replace the fuel pump.
Air bubbles in the fuel lines or injection
pump. Check the hoses to ensure that air is in
fact present and also check the fuel pump.
Eliminate the air from the injection pump by
unscrewing the cap and working the fuel
pump by hand.
Faulty starter motor. Repair or replace the starter motor.
The Engine Does Not Start
at Low Temperatures Fuel system clogged with paraffin crystals
forming due to the use of unsuitable fuel. Replace the fuel with fuel suitable for use at
low temperatures. Replace the fuel filters..
The Engine Cuts Out. Idle rpm too low. Adjust with adjustment screw.
Irregular flow of injection pump. Adjust flow.
Impurities or water in the fuel lines. Disconnect the hoses and clean them us-
ing a jet of compressed air. Dismantle and
clean the injection pump. Remove water
from fuel tank and refuel. Drain fuel sys-
tem. Clogged fuel filter. Dismantle and re-
place if necessary.
Presence of air in the fuel and injection sys-
tem. Check that the hoses are not cracked or the
unions loose. Replace worn parts, remove
the air from the hoses and deaerate the
injection pump and fuel filter by unscrewing
the caps and working the primer pump by
hand.
Broken injection pump controls. Replace the faulty parts.
Abnormal clearance between camshaft
cams and tappets. Adjust clearance by replacing shims.
Burned, corroded or chalky valves. Replace the valves, rectify or replace the
cylinder head seatings.
The Engine Overheats Faulty water pump. Check the unit and replace if necessary.
Replace the gasket..
Malfunctioning thermostat. Replace the thermostat.
Restricted coolant openings in the cylinder
head and cylinder groups. Wash following the standards specified for
the type of descaling product used.
Water pump drive belt slack.
Check and adjust the tightness of the belt.
On applications provided with automatic
tensioner, check correct setting.
Coolant level too low. Add coolant. Radiator must be full and re-
covery tank filled 1 in. above mark.
Incorrect engine timing. Check timing and tune correctly.
Incorrect calibration of injection pump. Correct the delivery rate of the pump on a
bench so that the injection is at the speci-
fied rate.
Air cleaner blocked. Clean the air filter or replace if necessary.
Engine Operation is
Irregular and Lacks Power Incorrect timing of injection pump. Check timing and correctly set pump.
Excessive piston wear.
Check or replace injection pump.
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