Need help?


Search OutdoorKing by entering Key Words Below



Who's Online Now
0 members (), 36 guests, and 339 robots.
Key: Admin, Global Mod, Mod
Online Spare Parts


Online Store


Newest Topics
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
Old Fuel
by AVB - 21/03/24 10:48 PM
Rover ES with vertical pull start and original decals
by MowingManiac - 19/03/24 10:50 AM
victa catcher repair
by QSR - 17/03/24 04:07 PM
Postng problems
by AVB - 17/03/24 02:14 AM
Loncin Engine Manuals and Parts List
by Bruce - 14/03/24 06:31 PM
Topic Replies
Robin EC10
by maxwestern - 12/04/24 05:37 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
Old Fuel
by AVB - 27/03/24 10:51 PM
Rover ES with vertical pull start and original decals
by maxwestern - 21/03/24 08:51 PM
Rover Colt 5 - Cutter Spindle Bearings
by Bruce - 20/03/24 06:36 AM
victa catcher repair
by AVB - 18/03/24 09:41 AM
Postng problems
by AVB - 17/03/24 09:52 PM
Previous Thread
Next Thread
Print Thread
Rate Thread
Hop To
Joined: Feb 2008
Posts: 4
kingcat Offline OP
Novice
I have been watching this forum with interest and I am hoping someone out there can help. I have a Cox Kingcat with a single cylinder 16hp Vanguard engine. I have serious vibration problems. I have disconnected and removed the clutch and the drive pulley for the hydrostatic to eliminate these parts so there is nothing on the end of the crankshaft. Faulty crankshaft I thought, out came the engine and I removed the shaft. No had it checked at a crankshaft place and it is true. The machine runs well with no smoke and plenty of power. Only thing I can think of now is the harmonic balancer ( flywheel ) is out of balance but I can't see that happening, Any suggestions out there? Thanks for any help.

Membership information
Joined: Jan 2008
Posts: 44
MST Offline
Novice
These engines have a 'synchro-balance' system fitted to most engines (some manufacturers for some strange reason option their engines without it to save money) which you should have seen when you had it apart.

Synchro-Balance consists of two big cast iron weights which are eccentric on the crankshaft held together by a long 1/4 unf bolt and small conrod to mounting on the inside of the crankcase. Was it all there and in ok condition?

Also check for fatigue cracks on the chassis itself where the engine bolts on

If you decide to change the flywheel you should be able to pick up a good second hand one fairly easily but make sure the ring gear is ok and of the same material you already have (they are either plastic or metal ring gears)


Joined: Feb 2008
Posts: 4
kingcat Offline OP
Novice
Thanks MST for your assistance. I have looked at the parts list for my engine and it seems that the newer versions of this engine did away with the counter balance. There are three pictures of the crankshaft and two show some type of counter balance as you suggested but after 1999 it seems there is only the crankshaft. There are no cracks in the chassis where the engine mounts, I might try some local repairers re. your suggestion on the flywheel or I may just bite the bullet and take the engine to a small engine repairer. I was somewhat annoyed at the reaction by most of the mower repair shops, it was basically you need a new engine it will be about $2000 please thank you.

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

You will find that most mower shop will only be interested in selling new equipment as the older ones need knowledge base to repair and take some time to do. 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: 4
kingcat Offline OP
Novice
Thanks Bruce, Yes probably cause I am a tradesman from the old school and like to repair things rather than tossing them out. God I sound like one of these guys on the grumpy old men series. I will fix it though by hook or by crook.

Kingcat

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

I hope all goes well with the repair. smile

I too am from the old school. :Wavey: These days if the younger ones are challenged to use their brain they find it too hard and it is easier to replace rather than to fix and gain a bit of knowledge. crazy

Computers are great for reference material but they still can't replace the hands on approach. 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: 4
kingcat Offline OP
Novice
Well MST you were right, there should be a synchro balance system there and it has been removed at some time in the past. It took me a while to find this out as the manual for my model of engine states it shouldn't be there at all!!! Possibly the crankshaft ( or the engine ) has been changed at one time and the only one available required the balance assy. Anyway I have one on order and will post when I complete the job. Thanks to you all.

Joined: Jan 2008
Posts: 44
MST Offline
Novice
No Probs kingcat.

As I stated previously, there is a small number out there without the synchro balance. Some manufacturers order the engines without them to save costs, and rely on the chassis to be strong enough to withstand the vibrations.

Cost cutting by Cox I would say, it was probably never fitted from new . . . . I have seen this from a few manufacturers which I will not name!


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

Link Copied to Clipboard
Newest Members
kindkong, Painey, Tas, Justin Phillips, Infus10n
16,783 Registered Users
Forum Statistics
Forums145
Topics12,705
Posts104,564
Members16,783
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: 0.020s Queries: 31 (0.014s) Memory: 0.7008 MB (Peak: 0.7556 MB) Data Comp: Zlib Server Time: 2024-04-13 07:37:37 UTC
Valid HTML 5 and Valid CSS