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Engine Troubleshooting
Engine Cranks But Will Not Start
When troubles occur, be sure to check the simple causes which, at first, may seem too obvious to be
considered. For example, a starting problem could be caused by an empty fuel tank.
1. Empty fuel tank
2. Electric fuel pump not operating
3 Poor Fuel, dirt, or water in the fuel system
4 Clogged fuel ling
5 Spark plug lead(s) disconnected
6 faulty spark plugs
7 Faulty ignition module(s)
8 Carburetor solenoid malfunction
9 Battery connected backwards
10 Not enough water in water tank
1. Restricted fuel tank cap vent
2. Faulty or misadjusted choke or throttle controls
3 Poor Fuel, dirt, or water in the fuel system
4 Loose wires or connections that short the kill
terminal of the ingnition module to ground
5 Faulty cylinder head gasket
6 Faulty carburetor
7 Intake system leak
Engine Starts But Does Not Keep Running
Engine Starts Hard
1. Reel supply valve on (causing engine to start under load)
2. Dirt or water in the fuel system
3 Loose or faulty wires or connections
4 Clogged fuel ling
5 Faulty or misadjusted choke or throttle controls
6 faulty spark plugs
7 Low compression
8 Weak spark
9 Fuel pump malfunction causing lack of fuel
10 Engine overheating-cooling air circulation restricted
11 Quality of fuel
12 Flywheel key sheared
13 Intake system leak
Engine Will Not Crank
1. Reel supply valve on
2. Battery is discharged
3 Loose or faulty wires or connections
4 Faulty ignition switch
5 Spark plug lead(s) disconnected
6 Faulty electric starter or soleniod
7 Seized internal engine components
1. Dirt or water in the fuel system
2. Spark plug lead disconnected
3 Poor fuel quality
4 Engine overheated
5 Faulty spark plugs
6 Faulty ignition module or incorrect air gap
7 Carburetor adjusted incorrectly
8 Loose wires or connections that intermittently
ground the ignition kill circuit
Engine Runs But Misses
1. Stale fuel and / or gum in carburetor
2. Fuel supply inadequate
3 Dirt, or water in the fuel system
4 Idle fuel adjusting needles improperly set
5 Idle speed adjusting screw improperly set
6 faulty spark plugs
7 Low compression
8 Restricted fuel tank cap vent
9 Engine overheated-cooling
system/air circulation problem
Engine Will Not Idle
Engine Overheats
1. Air intake/ grass screen, cooling fins,
or cooling shrouds clogged
2. Excessive engine load
3 Low crankcase oil level
4 High crankcase oil level
5 Faulty carburetor
6 Lean fuel mixture
Содержание 740 Water Jet
Страница 16: ...Page 16 Fuel and Oil Recomendations ...
Страница 17: ...Page 17 Lubrication Maintenance Engine ...
Страница 20: ...Page 20 Air Cleaner ...
Страница 21: ...Page 21 Air Cleaner continued ...
Страница 27: ...Page 27 740 Pump System Malfunction Chart Use SAE 90 Gear Oil ...
Страница 32: ...Page 32 Wiring Diagram Kohler Engine wires ...
Страница 33: ...Page 33 Wiring Diagram 740 Jetter ...
Страница 35: ...Page 35 740 Final Assembly cont 62 71 25 28 3 5 94 33 60 2 56 57 55 ...
Страница 36: ...Page 36 740 Final Assembly cont 70 72 20 78 66 65 61 21 9 25 67 30 36 22 19 37 46 39 45 26 31 32 B 23 53 ...
Страница 38: ...Page 38 740 Final Assembly cont DETAIL C SCALE 1 6 91 94 94 93 92 93 94 91 81 74 96 47 90 98 89 88 ...
Страница 53: ...Page 53 Hitch Tube Assembly 73806800 ...
Страница 59: ...Page 59 Unloader Giant 22973C 79803700 ...