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Curtis B.
Curtis B., Technician
Category: Small Engine
Satisfied Customers: 28106
Experience:  have worked on and around most engine models for 35 yrs./Polaris ATV expert
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Rick, My name is ***** ***** and my RST cranks but will not

Customer Question

Hi Rick, My name is ***** ***** and my RST cranks but will not fire.
JA: Thanks. Can you give me any more details about your issue?
Customer: spark plug changed, full filter cleaned
JA: OK got it. Last thing — Technicians generally expect a deposit of about $18 to help with your type of question (you only pay if satisfied). Now I'm going to take you to a page to place a secure deposit with JustAnswer. Don't worry, this chat is saved. After that, we will finish helping you.
Submitted: 1 year ago.
Category: Small Engine
Customer: replied 1 year ago.
Is the question still being reviewed?
Expert:  Curtis B. replied 1 year ago.

What is the make and model of the engine? Have you removed spark plug, and with the spark plug grounded, do you have spark when cranking?

Customer: replied 1 year ago.
Getting make and model. Pls stay with me.....
Expert:  Curtis B. replied 1 year ago.

OK, do not recognize RST.???

Customer: replied 1 year ago.
Model RZT S46 - Zero Turn Cub Cadet Riding Mower
Expert:  Curtis B. replied 1 year ago.

Engine twin or single cylinder? When did mower last run?

Customer: replied 1 year ago.
2 spark plugs, twin cylinder
Last ran in Nov. early Dec of last year
Expert:  Curtis B. replied 1 year ago.

Remove both spark plugs and check for spark with plugs grounded. If you have spark, put a teaspoon of fuel into each spark plug hole, re-install the spark plug and see if it will run for a few seconds. If it does, and then dies, we have no fuel through the carburetor.

Customer: replied 1 year ago.
ok If no fuel through the carburator, then what
Expert:  Curtis B. replied 1 year ago.

The carburetor has an electric solenoid in the base of it, it has to click open when key is turned on. Need to see if it is working. Next would be to check fuel supply to the carburetor from the fuel tank,

Expert:  Curtis B. replied 1 year ago.

Here is service manual on the KT725 engine.