Rover 5377 - 12HP - Manual (Page 16)

TROUBLE SHOOTING
PROBLEM POSSIBLE CAUSES CORRECTIVE ACTION
Engine loses power 1. Oil level in crankcase in low 1. Add oil to crankcase
2. Cooling fins and air passages under engine
blower housing are blocked
2. Remove obstruction from passages
3. Engine load is excessive 3. Select a lower speed to reduce load
4. Air cleaner is dirty 4. Clean air cleaner element
5. Dirt or water is in fuel system 5. Have machine serviced by Authorised
Service Dealer
6. Carburetor is adjusted incorrectly 6. Adjust the carburetor
7. Spark plug is pitted, fouled or defective in
some other way
7. Install new correctly gapped spark plug
Engine over heats 1. Cooling fins and air passages under engine
blower housing are blocked
1. Remove obstruction from cooling fins air
passages
2. Carburetor is adjusted incorrectly 2. Adjust the carburetor
3. Oil level in crankcase is low 3. Add oil to crankcase
4. Engine load is excessive 4. Select a lower speed to reduce load
Mower vibrates abnormally 1. Engine mounting bolts are loose 1. Tighten mounting bolts
2. Loose cutter pulley, idler pulley or drive
pulley
2. Tighten the appropriate pulley
3. Cutter assembly is unbalanced 3. Replace broken blades in sets
4. Cutter assembly is loose 4. Tighten securing nut
Cutter does not rotate 1. Cutter drive belt is worn, loose or broken 1. Install new cutter drive belt
2. Cutter drive belt is off pulley 2. Install drive belt
Mower does not drive 1. Drive belt is worn, loose or broken 1. Install new drive belt
2. Drive belt is off pulley 2. Install drive belt
3. Unable to select speed on transaxle 3. Have machine serviced by Authorised
Service Dealer
Engine does not start, hard 1. Fuel tank is empty 1. Fill fuel tank with petrol
to start, loses power, or fails 2. Speed selected 2. Select Neutral
to keep running 3. Cutter Drive is engaged 3. Disengage Cutter Drive
4. Spark plug is loose 4. Tighten spark plug
5. Spark plug lead is loose or disconnected
from spark plug
5. Install spark plug lead on spark plug
6. Spark plug gap is incorrect 6. Set gap between electrodes at 0.8mm
7. Spark plug is pitted, fouled, or defective in
some other way
7. Install new correctly gapped spark plug
8. Wrong spark plug is used 8. Install correct spark plug
9. Electrical connections are loose 9. Check electrical system to ensure good
contact
10. Carburetor is adjusted incorrectly 10. Adjust the carburetor
11. Air cleaner is dirty 11. Clean the air cleaner element
12. Vent hole in fuel tank is plugged 12. Inspect and open vent
13. Dirt or water in fuel system
14. Dead battery
15. Defective points, condenser, ignition coil,
or ignition switch
13. Have machine serviced by Authorised
Service Dealer
16. Module or switch is defective
Engine does not idle or idles 1. Air cleaner is dirty 1. Clean air cleaner element
Poorly 2. Oil level in crankcase is low 2. Add oil to crankcase
3. Cooling fins and air passages under engine
blower housing are plugged
3. Remove obstruction from cooling fins
and air passages
4. Idle speed is too low or high speed mixture
is incorrect
4. Adjust the carburetor
5. Dirt or water is in fuel system 5. Have machine serviced by Authorised
Service Dealer
6. Vent hole in fuel tank is plugged 6. Clean fuel tank vent
7. Spark plug is pitted, fouled or defective in
some other way
7. Install new correctly gapped spark plug
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