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 for 2 cycle engines
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
repair or replace
Black Exhaust
20, 22, 25, 29, 31, 32, 33
4, 20, 25, 31, 33, 34
Blue/White Exhaust
Difficult Starting
repair or replace
5, 8, 10, 20, 21, 22, 29, 31, 32, 33
8, 9, 10, 20, 21, 26, 29, 33, 59, 62
20, 22, 25, 31, 32, 33
22, 26, 29, 31, 33, 36, 46, 59
8, 10, 20, 21, 22, 25, 26, 31, 32, 33
2, 3
repair or replace
repair or replace
repair or replace
repair or replace
repair or replace
repair or replace
repair or replace
repair or replace
repair or replace
Erratic Running
Excessive Fuel Consumption
Knocking
Loss of Power or System
Low Cranking Power
Misfiring
10, 20, 25, 26, 28, 29, 32
19, 25, 63
Overheating
Poor Compression
Starts and Stops
25, 28, 29, 31, 32, 33, 34, 59
6, 10, 62
repair or replace
see electrical systems
see engine service manual
Vibration
20, 25, 26, 29, 33, 48, 49
2, 3
repair or replace
Will Not Crank
Will Not Start
charge battery or replace
6, 8, 10, 21, 22, 62
repair or replace
see electrical systems
see engine service manual
TROUBLESHOOTING KEY
1
2
3
4
Restriction in air cleaner
Bad electrical connection
Faulty starter motor
Incorrect grade of lubricating
oil
22
23
24
25
Incorrect grade of fuel
Sticking throttle/restricted movement
Exhaust pipe restriction
43
44
45
46
Faulty suction pipe
Choked oil filter
Bad solenoid switch
Incorrect piston height
Leaking cylinder head gasket
5
6
7
Low cranking speed
Fuel tank empty
26
27
28
Overheating
Cold running
Incorrect tappet adjustment
47
48
49
Damaged fan
Faulty engine mounting
Incorrectly aligned flywheel and/or
flywheel housing
Faulty thermostat
Restriction in water jacket
Loose fan belt
Controls not in correct
operation position
Blocked fuel feed line
Faulty fuel lift pump
Choked fuel filter
8
9
10
11
12
29
30
31
32
33
Sticking valves
Incorrect high pressure pipes
Worn cylinder bores
Pitted valves and seats
Broken, worn or sticking piston
ring(s)
50
51
52
53
54
Battery capacity low
Air in fuel system
Choked radiator
Faulty water pump
13
14
Faulty fuel injection pump
Faulty fuel injectors or
incorrect type
34
35
Worn valve stems and guides
Restriction in air cleaner
55
56
Choked breather pipe
Damaged valve stem oil deflector (if
fitted)
15
Incorrect use of cold start
equipment
36
Worn or damaged bearings
57
Coolant level too low
16
17
Faulty cold start equipment
Broken fuel injection pump
drive
37
38
Insufficient oil in sump
Bad/defective oil temperature switch
58
59
Blocked sump strainer
Broken valve spring
18
19
Incorrect fuel pump timing
Incorrect valve timing
39
40
Oil pump worn
Pressure relief valve sticking open
60
61
Exhaust or vacuum pipe leak
Bad or defective water temperature
switch
20
21
Poor compression
Blocked fuel tank vent
41
42
Pressure relief valve sticking closed
Broken relief valve spring
62
63
Bad spark plug(s)
Improper amount of oil in fuel mixture
5
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| Categories | Ariens Snow Blower Manuals, Snow Blower Manuals |
|---|---|
| Tags | Ariens 938001, Ariens 938004, Ariens 938006, Ariens 938012, Ariens 938015, Ariens 938016, Ariens 938301, Ariens 938305 |
| Download File |
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| Document Type | Service Manual |
| Language | English |
| Product Brand | Ariens, Snow Blower |
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| Publisher | ariens.com |
| Wikipedia's Page | Ariens |
| Copyright | Attribution Non-commercial |
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