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Valpadana 4rm 330 require valve settings and supplier for push-rods

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John Deere LT 133, will not start. And is backfiring. Cleaned carburetor, all fuel lines, checked fuel pump, drained old gas,replaced spark plugs


could be a major problem. take the flywheel off and check if the flywheel key is sheared. causing timing to be off. if that is ok it has dropped a valve. i just finished one yesterday with a bent push rod. it will backfire like you are saying. take the valve cover off and look to see if the valves are set correctly. ill bet you see a bent push rod in there. replace the rod, set valves and should be good to go. you can not straighten them. they are only $5.00 to $10.00

Nov 03, 2016 | John Deere Garden

1 Answer

Timing chain


bent push rods could have been caused when the chain broke and not from the chain been replaced wrong or the timing out.

if the engine was running when the chain broke the cam would have stopped leaving all the valves in the same positon as the mometum of the fly wheel continued to turn the pistons in the cylendars could hav come up and hitting the valves and bending the push rods. and or damaging the cylendar head.

recommend removing the head and have it checked for damage, as well as replacing the bent push rods, and cylendar gaskit. once the head is checked and the valves are seated well. then replace and follow instructions in the set up for the pistons and cam prior to replacing the chain and setting the timing.

I hope this was helpful.

Oct 20, 2012 | 1991 GMC C3500

1 Answer

I need to know the over head vave setting for the intake and exhaust on a 17.5hp Briggs & Stratton vertical shaft, single stroke lawn mower.


hi pauly46 here

set piston to tdc compression stroke then run it down the bore a 1/4 inch

set the tappetts to inlet the bottom valve ( alloy push rod ) to a tightish 0.004" and set the
ex valve the top one ( steel push rod ) to 0.005"

setting at 1/4 pst tdc eliminates decompressor from upsetting valve clearance seting


cheers pauly46

Mar 26, 2011 | Briggs & Stratton Garden

1 Answer

2001 grand cherokee 4.0l valve rocker torque specs


5 million made.
it's in the fsm book
posted here over 300 times.
are you asking , how to set rockers ?

chapter 9 page 27
------------------text fsm---------------------
INSPECTION
Inspect the pivot surface area of each rocker arm.
Replace any that are scuffed, pitted, cracked or
excessively worn.
Inspect the valve stem tip contact surface of each
rocker arm and replace any rocker arm that is deeply
pitted.
Inspect each push rod end for excessive wear and
replace as required. If any push rod is excessively
worn because of lack of oil, replace it and inspect the
corresponding hydraulic tappet for excessive wear.
Inspect the push rods for straightness by rolling
them on a flat surface or by shining a light between
the push rod and the flat surface.
A wear pattern along the length of the push rod is
not normal. Inspect the engine cylinder head for
obstruction if this condition exists.
INSTALLATION
NOTE: This procedure can be done with the engine
in or out of the vehicle.
(1) Lubricate the ball ends of the push rods with
Mopart Engine Oil Supplement, or equivalent and
install push rods in their original locations. Ensure
that the bottom end of each push rod is centered in
the tappet plunger cap seat.
(2) Using Mopart Engine Oil Supplement, or
equivalent, lubricate the area of the rocker arm that
the pivot contacts. Install rocker arms, pivots and
bridge above each cylinder in their originally position
(Fig. 23).
(3) Loosely install the capscrews through each
bridge.
(4) At each bridge, tighten the capscrews alternately,
one turn at a time, to avoid damaging the
bridge. Tighten the capscrews to 28 N·m (21 ft. lbs.)
torque.
(5) Install the engine cylinder head cover (Refer to
9 - ENGINE/CYLINDER HEAD/CYLINDER HEAD
COVER(S) - INSTALLATION).

Mar 13, 2011 | Jeep Grand Cherokee Cars & Trucks

1 Answer

Puch rod come off roker arm


Usually there is a reason why the rocker arm came off the push rod so you will need to check a few things before putting it back together. First make sure the push rod is not bent, if it is replace it, do not try to straighten it. Make sure the rocker arm stud did not loosen, if it did back out, re-tighten. If you're ready to put it back together, you will need to set the valve clearance between the rocker arm and the push rod. You will need to know the engine model number to get this clearance since it varies. Once you get the clearance values, make sure the piston is at TDC on a compression stroke and adjust the valves per the setting. In some rare instances, the valve can "stick" in the valve guide and this will cause excessive gap. However, usually when this occurs the engine will not start anyway. Hope this gets you in the right direction.

Feb 16, 2011 | Briggs & Stratton Power Products 5,550...

1 Answer

Engine not failed oil pressure good engine ticking think it is rod bearings how do you replace on 1997 chev Blazer


hold up rod bearings were did you get that?lets take it from the top.camshaft lobs move lifters on rotation,which lifters move push rods,push rods push valves up and down,which other side of valves push up and down valve stems,which open and close exhaust and intake stems.ok now were clear on that to see your push rods.take off your valve covers on side with tick.1.check for valve loosness.need a feeler gauge for this and specs for you truck to do this.because ticking is mostly associated with valve loosness or to tight.2.if rod is bad loosin valves but not off and inspect the rods for bends.on a flat surface.replace if bend.also make sure they to go back in same place.and repeat step 1.finally noise continues need to take in and checked possible internal damage.

Aug 17, 2010 | 1997 Chevrolet Blazer

1 Answer

Need valve settings for 14.5 ohv briggs


hi

watch inlet valve open and close fully
set engine @ 1/4 past tdc on power stroke
sett inlet @ 0.003 thou and exhaust @ 0.005 thou

inlet valve is the one cloest to the muffler and ex is the other one

inlet has alloy push rod and ex has steel push rod

plug type is rc12yc


cheers hope it helps

here is web site
www.briggsandstratton.com

Aug 01, 2010 | Briggs & Stratton Garden

1 Answer

Sequence for the push rods for the intake & exhaust on a 2001 Grand Am GT there are 3 long ones & 3 short ones, While replacing the intake manifold gaskets, I forgot where they go!!!!


The valves that are furthest from the intake, on the outside perimeter of the head, closest to the spark plugs are small diameter valves. These valves use the short rods. The valves that are [non-uniformly] on the interior of the head use the large diameter valves. These valves use the long push rods. This is not due to the diameter, but do to the proximity of the valve on the head with respect to the rod length required to push it. So, looking at a picture of the "front head," closest to the front of the car, from underneath will verify that diameters are small - large - large - small - large - small. Inspecting from above you should note the order of valves as outside - interior - interior - outside - interior - outside. And if you invert that same head to the "rear head" configuration (180o) it would become small - large - small - large - large - small (outside - interior - outside - interior - interior - outside).

4dbbc77.jpg
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The answer is this:
The rear head (2-4-6) will have push-rods in the following configuration:
short - long - short - long - long - short

The front head (1-3-5) will have push-rods in the following configuration:
short - long - long - short - long - short


May 16, 2010 | 2001 Pontiac Grand Am SE

5 Answers

1 push rod is steel & 1 is alum, which one is exaust?


The intake valve is the lower valve and its push rod is the aluminum one, the exhaust is the upper valve and it has the steel rod, there is no rocket science going on here, the aluminum push rod is used to cut costs.

Apr 29, 2010 | Parks Optical 13.5hp Briggs And Stratton...

1 Answer

Procedure for setting rocker arms and push rods for valves in a 1994 s-10 vin. code w. please help we have bent push rods and haynes manual is not clear thank you.


the simplist way to set rockers or cams is turn the engine until one valve is open and set the one on the same cylinder because it has to be closed

Mar 28, 2010 | 1994 Chevrolet S-10

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