valve adjustment
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Garden Tractors
Forum Description: A great place to discuss the Simplicity and Allis Chalmers Garden Models
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=121544
Printed Date: 27 Nov 2024 at 2:31am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: valve adjustment
Posted By: LeonR2013
Subject: valve adjustment
Date Posted: 06 Apr 2016 at 9:16pm
| If you are having trouble with you overhead valve Briggs and I suppose others, kicking back or not wanting to turn over like a bad battery, check the valve clearance first. Loose valves on these engine can cause catastrophic disassembly. |
Replies:
Posted By: steve(ill)
Date Posted: 06 Apr 2016 at 9:34pm
|
It is suppriseing, but if you are 2-3 thousands off on the valves, the motor will come up on compression and STOP.. Acts like a bad battery or weak starter.... Proper valve clearance is a MUST on these for the past 15 years. ------------- Like them all, but love the "B"s. |
Posted By: LeonR2013
Date Posted: 07 Apr 2016 at 5:56am
| Amazing more people don't know that isn't it? What happens is by getting the adjustment too wide it takes the over lap out of the valves and raises the comp. Briggs has weird valve configuration anyway so that comp. can go wild. But you sure are right they are touchy. Leon R Cmo |
Posted By: HudCo
Date Posted: 08 Apr 2016 at 11:08pm
| bad thing is , is that when they get it to us we adjust the valves but the starters have been abused so bad that they also need to be rebiult or replaced also |
Posted By: CTuckerNWIL
Date Posted: 18 Apr 2016 at 6:00pm
|
I had a rocker break on mine last year. Got a new one and put it on, making sure the clearance was right for that engine and it started up and died in about 5 seconds. The new rocker was broken. I called a local lawnmower shop and he asked me to bring the head in. I took it off and brought it to him and he showed me in 2 seconds what the problem was. The cast guide in an aluminum head came partway out. Enough so it would tip and bind on the valve stem if it wasn't setting perfect. I got a new head and she's been running great ever since. A note to remember; EVERY time you finish mowing, use compressed air to clear out any debris on or around the block. If that head gets a bit too hot, the aluminum head can grow faster than the cast iron guide and you got trouble.  ------------- http://www.ae-ta.com" rel="nofollow - http://www.ae-ta.com Lena 1935 WC12xxx, Willie 1951 CA6xx Dad bought new, 1954WD45 PS, 1960 D17 NF |
Posted By: HudCo
Date Posted: 19 Apr 2016 at 10:13pm
| had a kohler at the shop in a zero turn fins all plugged for a small oil leak in the valve cover i know made the head over heat and the intake rocker stud backed out wich was the reason it was there was they said it would not start oil leaks on an air cooled engine =short engine life |