Kohler KT730 User Manual (English)

Questions and Answers:

K
Kimberly SmithAug 23, 2025
Why Kohler KT730 Engine Cranks But Will Not Start?
- J
  Jeffrey JarvisAug 25, 2025
  Your Kohler engine might crank but fail to start due to several reasons: a backwards battery connection, a blown fuse, a malfunctioning carburetor solenoid, the choke not closing, a clogged fuel line or filter, a failed diode in the wiring harness, a DSAI or DSAM malfunction, an empty fuel tank, a faulty electronic control unit, faulty ignition coils or spark plugs, a fuel pump malfunction (clogged or leaking vacuum hose), a closed fuel shut-off valve, faulty or improperly gapped ignition modules, insufficient voltage to the electronic control unit, an engaged or faulty interlock switch, the key or kill switch being in the OFF position, a low oil level, poor fuel quality (dirt, water, stale, or improper mixture), a SMART-SPARK™ malfunction, or disconnected spark plug leads.
R
Ronald BairdAug 25, 2025
Why Kohler Engine loses power?
- M
  Mark CaseAug 26, 2025
  If your Kohler Engine loses power, start by cleaning or replacing the air cleaner element. Ensure the engine isn't overheating by allowing it to cool down. Reduce the engine load if it's excessive. Inspect and clear any restrictions in the exhaust system. Check and replace the spark plug(s) if faulty. Verify and adjust the crankcase oil level if it's too high. Adjust the governor setting if it's incorrect. If the battery is low, charge or replace it. Inspect the engine for compression issues if compression is low. Check and refill the crankcase oil if the level is low. Finally, replace the fuel with fresh quality fuel to rule out fuel issues.
J
Jason ClaytonAug 27, 2025
What to do if Kohler KT730 Engine starts but does not keep running?
- B
  Brian ObrienAug 27, 2025
  If your Kohler Engine starts but doesn't keep running, there are several possible causes. A faulty carburetor could be the issue, so inspect and replace it if necessary. Also, a faulty cylinder head gasket can cause this problem, requiring replacement. Adjust the choke or throttle controls if they are faulty or misadjusted. Inspect the fuel pump and hoses for any malfunctions or clogs. Look for intake system leaks and repair them. Loose wires or connections that intermittently ground the ignition kill circuit can also be the cause, so tighten them. Replace the fuel with fresh quality fuel to ensure fuel quality isn't the problem. Lastly, clean or replace the fuel tank cap if the vent is restricted.
A
Adam HardyAug 27, 2025
What causes Kohler KT730 Engine will not crank?
- P
  Paul BowersAug 28, 2025
  If your Kohler Engine will not crank, it could be due to several reasons. The battery might be discharged, so try charging or replacing it. Inspect and replace the electric starter or solenoid if they are faulty. Check and replace the key switch or ignition switch if they are faulty. Make sure the interlock switch is not engaged or faulty. Tighten any loose wires or connections that might be grounding the ignition kill circuit. Check the pawls engagement. Finally, inspect the engine for seized components.
D
Dr. James CampbellAug 29, 2025
Why Kohler Engine starts hard?
- B
  bakerjoeAug 29, 2025
  If your Kohler Engine starts hard, consider these potential causes: a clogged fuel line or fuel filter, which you should clean or replace. If the engine overheated, allow it to cool down. Inspect and replace the ACR mechanism if it's faulty. Adjust the choke or throttle controls if they are faulty or misadjusted. Inspect and replace the spark plug(s) if they are faulty. Replace the flywheel key if it's sheared. Inspect the fuel pump and hoses for any malfunctions. Check the interlock switch to ensure it is not engaged or faulty. Tighten any loose wires or connections that might be grounding the ignition kill circuit. Inspect the engine for compression issues if compression is low. Replace the fuel with fresh quality fuel. Finally, inspect the ignition system for a weak spark.
K
Keith VillanuevaAug 30, 2025
What to do if Kohler KT730 runs but misses?
- R
  Ryan MossAug 30, 2025
  If your Kohler Engine runs but misses, it could be due to several reasons: The carburetor might be adjusted incorrectly, so adjust it properly. If the engine has overheated, allow it to cool down. Inspect and replace the spark plug(s) if they are faulty. Inspect and correctly gap the ignition module(s) if they are faulty or improperly gapped. Check and adjust the crankshaft position sensor air gap if it's incorrect. Check the interlock switch to ensure it is not engaged or faulty. Tighten any loose wires or connections that might be grounding the ignition kill circuit. Replace the fuel with fresh quality fuel. Reconnect any disconnected spark plug leads. Secure the spark plug lead boot if it's loose on the plug. Finally, tighten any loose spark plug leads.
E
Evan FranklinAug 31, 2025
How to troubleshoot Kohler Engine that will not idle?
- O
  obergerAug 31, 2025
  If your Kohler Engine will not idle, it could be due to several factors. If the engine overheated, allow it to cool down. Inspect and replace the spark plug(s) if they are faulty. Adjust the idle fuel needle(s) if they are improperly set. Adjust the idle speed screw if it's improperly set. Ensure there is an adequate fuel supply. Inspect the engine for compression issues if compression is low. Replace the fuel with fresh quality fuel. Clean or replace the fuel tank cap if the vent is restricted.
L
lambamandaSep 2, 2025
Why Kohler KT730 Engine uses excessive amount of oil?
- M
  Maria GarciaSep 2, 2025
  If your Kohler Engine uses an excessive amount of oil, several issues could be responsible. Loose or improperly torqued fasteners can cause oil consumption, so tighten or replace them. Inspect and replace the head gasket if it's blown or if the engine overheated. Inspect and replace the breather reed if it's broken. Inspect and repair the crankcase breather if it's clogged, broken, or inoperative. Drain excess oil from the crankcase if it's overfilled. Use the correct oil viscosity/type. Inspect and repair the cylinder bore if it's worn. Inspect and replace the piston rings if they are worn or broken. Inspect and replace the valve stems/valve guides if they are worn.
J
James ChaneySep 3, 2025
What to do if my Kohler KT730 stops suddenly?
- D
  Daniel ZhangSep 3, 2025
  If your Kohler Engine stops suddenly, do not attempt to service or replace major engine components, or any items that require special timing or adjustment procedures. This work should be performed by a Kohler authorized dealer.
S
Susan SchwartzSep 4, 2025
How to troubleshoot Kohler KT730 Starts Hard?
- C
  cooleyjonathanSep 5, 2025
  If your Kohler engine starts hard, the issue might stem from a clogged fuel line or fuel filter, the engine overheating, a faulty ACR mechanism, faulty or misadjusted choke or throttle controls, faulty spark plugs, a sheared flywheel key, a fuel pump malfunction (clogged or leaking vacuum hose), an engaged or faulty interlock switch, loose wires intermittently grounding the ignition kill circuit, low compression, poor fuel quality (dirt, water, stale, or improper mixture), or a weak spark.

Kohler KT730 Specifications

General

Compression Ratio	8.5:1
Fuel System	Carburetor
Ignition System	Electronic
Cooling System	Air
Starter	Electric
Displacement	725 cc
Power	3600 RPM
Torque	2400 RPM
Oil Capacity	2.0 U.S. quarts
Lubrication	Full Pressure
Weight	92 lbs (41.7 kg)