88 Force 125 Tilt/Trim Pictures **Updated** Fixed

U

uthornsfan

Cadet
Joined
Mar 6, 2011
Messages
8
I have read through most of the Force Tilt/Trim threads on the forum and searched high and low and hope someone can help me.

I pulled my Pump apart and replaced the 2 orings in the bottom valve body. However before doing that I took the top plate of the valve body off. The one where there are 3 big ball bearings 1 small ball bearing and a couple of springs.

I haved edited this post so hopefully if anyone is searching for the same thing I was they can find this easier...

The Oring Part numbers for the Leak down problem are

tecumseh 631021b briggs & stratton 22-10055 which replaces 398188

http://www.mfgsupply.com/m/c/22-10055.html

Force 125 Valve Body Pump Tilt Trim Pictures Disassembly Assembly tear down break down Pics Picture

IMG-20110316-00232-1.jpg


IMG-20110316-00230.jpg
 
R

RRitt

Captain
Joined
Mar 30, 2006
Messages
3,319
Re: 88 Force 125 Tilt/Trim Question

Re: 88 Force 125 Tilt/Trim Question

shuttle oring?

all ball bearings back?

both needles in place?

then idk
 
R

RRitt

Captain
Joined
Mar 30, 2006
Messages
3,319
Re: 88 Force 125 Tilt/Trim Question

Re: 88 Force 125 Tilt/Trim Question

If you don't have any needles then never mind. Not all versions had them.
If the shuttle ring is good then only easy thing left is that you put little ball bearing into the hole before the small spring. the spring should push the bearing away from gear plate and into lower body.
 
R

RRitt

Captain
Joined
Mar 30, 2006
Messages
3,319
Re: 88 Force 125 Tilt/Trim Question

Re: 88 Force 125 Tilt/Trim Question

it looks correct in top picture but .... that metal plug is very rare. Whenever I rebuild a pump like yours I throw the plug & spring away and tap threads into the post. The I use a 1/4" set screw and new spring to dial in the pressure to 1800PSI. Drop a pair of small SS washers in the hole before spring to prevent spring from creeping up onto setscrew. With parts you have - you need to reassemble and check your pressure output on the downward facing port. You need 1200-2000psi. If it is off then disassemble, shim the spring, and repeat.

be careful not to damage the regulator seat which can be seen in fourth picture. if the hole becomes distorted then the seat has to be replaced. Since you don't have another pump to cannabilize that would mean the pump is ruined. so be careful not to damage the steel seat.
 
E

eyematey

Recruit
Joined
Apr 24, 2011
Messages
1
Re: 88 Force 125 Tilt/Trim Question

Re: 88 Force 125 Tilt/Trim Question

hey horns fan I am attempting the same thing on same year and model, where exactly do your said new parts go to fix the leak down prob and do you use all the parts I got two of the same of the 398188 part you recommended. thanks
 
T

tgoodman

Recruit
Joined
Jul 22, 2011
Messages
5
Re: 88 Force 125 Tilt/Trim Pictures **Updated** Fixed

In the second picture how did you get those ends out? Mine is leaking around those and I do not know how to get them out after takeing the keys off.

Thanks
 
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