Need help?


Search OutdoorKing by entering Key Words Below



Who's Online Now
0 members (), 114 guests, and 96 robots.
Key: Admin, Global Mod, Mod
Online Spare Parts


Online Store


Newest Topics
VC160 Motor advice needed
by QSR - 20/04/24 04:37 PM
Victa 24 hubcaps
by NormK - 18/04/24 02:19 PM
G4 Carby????? Advice please :-)
by Return Rider - 16/04/24 11:45 AM
Fuel Hose for Victa
by Dandare - 14/04/24 07:35 PM
Recoil starter for Villiiers Lightweight engine
by Malcolm Arnold - 14/04/24 02:01 PM
Long term storage of engines - best practice?
by N1KK0 - 29/03/24 02:43 PM
1972 victa vc auto drive front wheels
by QSR - 25/03/24 09:10 PM
Topic Replies
VC160 Motor advice needed
by QSR - 20/04/24 06:44 PM
Fuel Hose for Victa
by NormK - 20/04/24 02:02 PM
Recoil starter for Villiiers Lightweight engine
by Malcolm Arnold - 20/04/24 01:29 PM
Scammers
by maxwestern - 20/04/24 11:11 AM
G4 Carby????? Advice please :-)
by maxwestern - 20/04/24 10:15 AM
Victa 24 hubcaps
by maxwestern - 20/04/24 10:02 AM
Robin EC10
by maxwestern - 13/04/24 06:44 PM
Long term storage of engines - best practice?
by maxwestern - 04/04/24 09:47 PM
1972 victa vc auto drive front wheels
by Mowerfreak - 03/04/24 07:53 PM
Victa Plugs
by maxwestern - 03/04/24 06:51 PM
Previous Thread
Next Thread
Print Thread
Rate Thread
Hop To
#7433 05/03/08 07:32 PM
Joined: Feb 2008
Posts: 12
Mark_WA Offline OP
Novice
Hi,

I have a Briggs 98902 0385 that refuses to idle sensibly. It always seems be revving quite fast, even at the lowest throttle setting. I have run it without the air filter to observe the governor mechanism and at the lowest throttle setting the lever on the carby is fully 'backed off' ie if I move it off the stops it revs even higher. The govenor seems to be working, from cold I can see it preventing the motor from stalling. Everything else is fine, starts easily and runs great when cutting. I'm sure I had a B$S a few years ago that idled sooo slowly and was sweet as a nut... Or am I dreaming?

Thanks Guys

Membership information
Joined: Dec 1999
Posts: 5,334
Likes: 30
Repair Junkie
****
Mark_WA,

Click HERE for the owners manual and it will have information on the engine. For the parts list for your engine click HERE and have a look at page 5 for what I am talking about.

As to your high reeving of the motor you have a spring which goes to a metal section at the front of the motor (on the carby). This is where you can adjust the RPM by bending the metal section that the spring is connected to.

Try this and see how you go. cheers2


Regards,
[Linked Image]

Bruce


Please do not PM me asking for support. Post on the forums as it helps all members not just the individual.
Joined: Feb 2008
Posts: 12
Mark_WA Offline OP
Novice
Hi Bruce,
thanks for the reply...Perhaps I wasn't explicit enough in my previous post... The steel swing plate that the throttle cable is attached to is back so far as just not actuate the kill switch. The arm on the carby intake connected to the govenor is totally back one way, against the stops, moving it away from the stops increases the revs further. There doesn't appear to be any adjustment screws on the carby........

Joined: Dec 1999
Posts: 5,334
Likes: 30
Repair Junkie
****
Mark,

1. Did you have a look at the drawings?

2. Have you had the carby off?

If so did you put the gov wire in correctly as some times don't put it in correctly and the machine rev's high.

Can you post a picture of the carby on the mower. It will help a lot. cheers2


Regards,
[Linked Image]

Bruce


Please do not PM me asking for support. Post on the forums as it helps all members not just the individual.
Joined: Feb 2008
Posts: 12
Mark_WA Offline OP
Novice
Hey Bruce,
yes, I've had the carby off. I found the inlet sealing ring and retaining ring detached from the carby, so a serious air leak! This improved things but still revving pretty high.
The gasket/diaphragm is a bit ragged, I'll try and get one today. The closed chamber on the fuel tank was very dirty. I've added a pic of the carby. When supposedly idling the venturi control arm is in the fully closed position. When run without an air filter I can slow the idle down by resstricting the air intake with my hand. The long pickup tube with the filter on the end is very hard to blow through, is this normal?

Hope this will help you to help me!! - Mark

Attached Images
DSCN4903.JPG (712.48 KB, 113 downloads)
Joined: Feb 2008
Posts: 12
Mark_WA Offline OP
Novice
Bruce,
I have been scouring the net for linkage images.. I could be wrong but it looks as if the the throttle valve linkage has been assembled 90 degrees out of whack. Ie. the actuator arm should be central to the carby body, each end of the actuator being limited in movement by the centre stop on the carby.
I also notice that I have another spring missing 691859 governed idle spring..... What a saga!

Joined: Dec 1999
Posts: 5,334
Likes: 30
Repair Junkie
****
Mark_WA,

You have the link wire in the wrong hole and that is your problem with high RPM. cheers2


Regards,
[Linked Image]

Bruce


Please do not PM me asking for support. Post on the forums as it helps all members not just the individual.
Joined: Feb 2008
Posts: 12
Mark_WA Offline OP
Novice
Problem solved! The throttle valve actuator had been assembled incorrectly and never closed fully in that position because of the centre stop. Interestingly everything else seemed to work smoothly even though it was 90 degrees or so out of position!
Thanks to all who replied... Yes I don't need the extra spring, there is nowhere to anchor it to!
Attached is a pic of the correct assembly position.

Mark in WA

Attached Images
DSCN4907.JPG (690.64 KB, 128 downloads)

Moderated by  bigted, Bruce, CyberJack, Gadge, Mr Davis 

Link Copied to Clipboard
Newest Members
Armstrong, kindkong, Painey, Tas, Justin Phillips
16,784 Registered Users
Forum Statistics
Forums145
Topics12,710
Posts104,597
Members16,784
Most Online2,545
Dec 23rd, 2019
OutdoorKing Showcase
20 Bucks from FB Marketplace
20 Bucks from FB Marketplace
by Return Rider, February 20
Victa Cortina 2 Shed Find
Victa Cortina 2 Shed Find
by Return Rider, January 25
My Rover Baron 45
My Rover Baron 45
by Maxwell_Rover_Baron, April 16
SHOWCASE - Precision Mowers - 2021
SHOWCASE - Precision Mowers - 2021
by CyberJack, April 14
SHOWCASE – Atco Rotary – Paul C - 2020
SHOWCASE – Atco Rotary – Paul C - 2020
by CyberJack, December 28
HOME |CONTACT US
Powered by UBB.threads™ PHP Forum Software 7.7.5
(Release build 20201027)
Responsive Width:

PHP: 7.4.33 Page Time: 0.025s Queries: 33 (0.018s) Memory: 0.7021 MB (Peak: 0.7731 MB) Data Comp: Zlib Server Time: 2024-04-20 23:34:56 UTC
Valid HTML 5 and Valid CSS