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Briggs-Fan
Briggs-Fan, Small Engine Technician
Category: Small Engine
Satisfied Customers: 1258
Experience:  over 15 years experience in small engine repair, multiple certifications
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The starter won't turn the motor through compression. When

Customer Question

the starter won't turn the motor through compression. When the spark plug is removed it turns great/east.
Submitted: 1 year ago.
Category: Small Engine
Customer: replied 1 year ago.
Sorry, the motor turns great/easy
Expert:  Briggs-Fan replied 1 year ago.

Hi my name is ***** ***** welcome to Just Answerit sounds like your valves need to be adjusted , if they aren't opening and closing on time it can cause a compression build up . If this just started happening you could have a bent push rod or loose rocker arm

Customer: replied 1 year ago.
Wouldn't it run rough? Any advice on adjusting valves?
Expert:  Briggs-Fan replied 1 year ago.

This has a Briggs engine right ?

Customer: replied 1 year ago.
Kohler
Expert:  Briggs-Fan replied 1 year ago.

It looks like it has a kohler engine , can you get the numbers and family and info off the shroud .

Expert:  Briggs-Fan replied 1 year ago.

Being you replaced the starter and solenoid the only other option is the battery , but it sounds like your battery is good , have you checked it with a multimeter ?

Expert:  Briggs-Fan replied 1 year ago.

Can you get the info like family etc off the kohler engine ?

Customer: replied 1 year ago.
It's hooked up to a truck battery right now and I had the charger on it so I think it's good but...I don't have a multimeter. I'll go look for the info
Customer: replied 1 year ago.
Family: SKH426U1G2RB, MODEL: CV15S, Spec #: 41562
Expert:  Briggs-Fan replied 1 year ago.

Yeah I'd like to get a volt reading because it could have a bad cell which would make the cold cranking amps weak

Customer: replied 1 year ago.
I jumped it with a different battery, wouldn't that compensate?
Expert:  Briggs-Fan replied 1 year ago.

Yes it should , the cv15s valves are supposed to bea intense free and need no adjustments here is the service manual

Expert:  Briggs-Fan replied 1 year ago.

When you jumped it with another battery did you use that battery and hook it up to the original battery in the tractor ?

Customer: replied 1 year ago.
I will need to take some time to read thru and trouble shoot some more. Is there any way to connect back to this chat?
Customer: replied 1 year ago.
with jumper cables on a running truck
Expert:  Briggs-Fan replied 1 year ago.

Yes you can log in to Just Answer and reply back or bookmark this page . The valves are supposed to be non adjustable , if you used another battery to try to jump you tractor with the original battery in it I would first look at the tractor battery. Being you don't have a multimeter I would take it to a battery place and get a volt reading on it . You should have 12.25 or higher , you could have a bad cell in the battery and that would be the easiest fix , because if it is a compression build up we will have to remove the valve covers and inspect them etc

Expert:  Briggs-Fan replied 1 year ago.

Ok if your battery has a bad cell it would still do what it's doing . It sounds like the battery could be the culpritI had a friend 2 weeks ago with the same issue with a car and he was jumping it with a van and it wouldn't turn over and I told him to check the battery and sure enough it had a bad cell . So before we start getting into valves and bigger issues I'd pull the battery and get a volt reading on it , if you have 10.50 or 11.3 volts it has a bad cell

Customer: replied 1 year ago.
I will do that, thanks, ***** ***** the easy fix. I will be back, good or bad.
Expert:  Briggs-Fan replied 1 year ago.

Yes , please let me know what you find I rather check something simple as a battery than have you pull the valve cover etc and then find it was the battery , they can drop a cell and then their cold cranking amps aren't as strong .

Expert:  Briggs-Fan replied 1 year ago.

Hi , hope your Thanksgiving was good , just wondering if you were able to pull that battery and have it tested ?

Customer: replied 1 year ago.
I picked up a multimeter and plan to check the battery today. I'll let you know.
Expert:  Briggs-Fan replied 1 year ago.

Ok , when you do switch the meter to DC volts , mine has a spot for 20 , then you take the leads and put them on the battery etc . Let me know what volt reading you get .

Customer: replied 1 year ago.
Voltage drops to 4 volts when I turn the key. Going to buy a new battery.
Expert:  Briggs-Fan replied 1 year ago.

Ok but did you test it when it was sitting , what did the battery read sitting there

Customer: replied 1 year ago.
12.89
Expert:  Briggs-Fan replied 1 year ago.

Now that seems like a good reading , but it dropped to 4 volts when cranking

Customer: replied 1 year ago.
Expert:  Briggs-Fan replied 1 year ago.

Yeah , a good battery won't drop 7 volts cranking . Let me tho the results of putting the new battery in .

Expert:  Briggs-Fan replied 1 year ago.

We're you able to get a new battery ?

Customer: replied 1 year ago.
The new battery helped a lot. Still seems to have a hard time turning at full compression. Does start now
Expert:  Briggs-Fan replied 1 year ago.

if it's still having trouble it could be something with the push rods but those valves arent agjustable , does it run smooth ? Another thought is a sheared flywheel key