Ariens 927065 User Manual download pdf (Page 18)

SECTION 5 - ENGINE

5.1 ENGINE TROUBLESHOOTING

The following troubleshooting chart is to be used to

isolate engine problems and give possible causes and

corrective action responses.

The troubleshooting key is generic and can be used for

several types of engines. Use only those possible

causes and corrective actions that apply to the

unit.

TROUBLE

POSSIBLE CAUSES

(Refer to Key Below)

CORRECTIVE ACTION

Black Exhaust

1,20, 22, 25, 29,31,32, 33 repair or replace

BlueA/Vhite Exhaust

4, 20, 25, 31,33, 34 repair or replace

Difficult Starting

1, 5, 7, 8, 9,10, 20, 21,22, 29, 31, 32, 33

repair or replace

Erratic Running

1, 7, 8, 9, 10, 20, 21,23, 26, 29, 33, 59, 62

repair or replace

Excessive Fuel Consumption

1, 20, 22, 23, 25, 39, 31,32, 33 repair or replace

Excessive Crankcase Pressure

25, 31,33, 34, 45, 58 repair or replace

High Oil Pressure

4, 41

repair or replace

Knocking

22, 26, 29, 31, 33, 36, 46, 59 repair or replace

Loss of Power or System

1, 8,10, 20, 21, 22, 23, 25, 26, 31,32, 33 repair or replace

Low Cranking Power

2, 3, 4,11

repair or replace

Low Oil Pressure

3, 36, 37, 39

repair or replace

Misfiring

10, 20, 25, 26, 28, 29, 32

repair or replace

Overheating 1, 19, 25,

repair or replace

Poor Compression

25, 28, 29, 31, 32, 33, 34,59,

repair or replace

Starts and Stops

1,6, 10, 62

repair or replace

see electrical systems

see engine service manual

Vibration

20, 23, 25, 26, 29, 33, 45, 49

repair or replace

Will Not Crank

2, 11,45 charge battery or replace

Will Not Start

1, 10, 62 repair or replace

see electrical systems

see engine service manual

« i

TROUBLESHOOTING KEY

Restriction in air cleaner

22 Incorrect grade of fuel 43 Faulty suction pipe

Bad electrical connection

Sticking throttle/restricfed movement 44 Choked oil filter

Faulty starter motor

Exhaust pipe restriction

45 Bad solenoid switch

Incorrect grade of lubricating oil

Leaking cylinder head gasket 46 Incorrect piston height

Low cranking speed 26

Overheating 47 Damaged fan

Fuel tank empty

27 Cold running 48 Faulty engine mounting

Controls not in correct

Incorrect tappet adjustment 49 Incorrectly aligned flywheel and/or

operation position

flywheel housing

Blocked fuel feed line

Sticking valves 50 Faulty thermostat

Faulty fuel lift pump

Incorrect high pressure pipes 51 Restriction in water jacket

Choked fuel filter

Worn cylinder bores 52 Loose fan belt

Battery capacity low

32 Pitted valves and seats 53 Choked radiator

Air in fuel system

Broken, worn or sticking piston ring(s) 54

Faulty water pump

Faulty fuel injection pump

34 Worn valve stems and guides

55 Choked breather pipe

Faulty fuel injectors or incorrect

Restriction in air cleaner 56 Damaged valve stem oil deflector (if

type

fitted)

Incorrect use of cold start

equipment

Worn or damaged bearings

Coolant level too low

Faulty cold start equipment

Insufficient oil in sump 58 Blocked sump strainer

Broken fuel injection pump

drive

Bad/defective oil temperature switch

59 Broken valve spring

Incorrect fuel pump timing

Oil pump worn

Exhaust or vacuum pipe leak

Incorrect valve timing

40 Pressure relief valve sticking open 61

Bad or defective water temperature

switch

Poor compression

Pressure relief valve sticking closed

Bad spark plug(s)

Blocked fuel tank vent

Broken relief valve spring

5-18

1 2 ... 13 14 15 16 17 18 19 20 21 22 23 ... 43 44

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Ariens 927065 User Manual Page 18

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