newbie with the 735 cushman pictures

san diego jeff · 05-13-2013, 09:21 PM

here are some pics of the golfster. Still having issues with the idle. Will change all hoses this weekend. and see what happens.

san diego jeff · 05-14-2013, 09:09 AM

As you can see from the pics, all I've done is wipe the vehicle down, paint the 2 rear wheels, and add new rear tires. The paint job, which I really like, I plan to keep. No decisions on the seats yet. The rust is actually no more than surface rust and the floors are solid. I will clean the engine compartment once the engine is figured out and idles correctly. Clutch and brakes seem to work fine. Will clean and pack wheel bearings this weekend as well.
ANY IDEAS AND HELP APPRECIATED.

CharleyL · 05-14-2013, 11:31 AM

Great pictures!

It looks like you have an OMC motor. Is it an 18 hp (spark plugs on the bottom) or the 22 hp (spark plugs on the top)?

I'm not familiar with your Cushman model, but think you might have better fuel pressure to the carburetor if you replace the T in the fuel line with a bypass type fuel filter. These are available through the auto parts stores and I have the part number somewhere, but not here at the moment. They look like a standard inline tubular metal fuel filter, but have an L shaped line coming out of the side. This L is the bypass connection. These filters will increase the fuel pressure at the carburetor and yet let the excess fuel flow back to the tank. Your present connection wastes all of the fuel pressure by the direct connection from the T back to the tank. A bypass filter was standard for use with these OMC motors and it may help with your idling problems.

Charley

CharleyL · 05-14-2013, 06:58 PM

I used a Purolator F20036 bypass filter in my 87 truckster with the 22 hp OMC engine. It, or an equivalent in snother brand, should be available at any auto parts store. The Purolator filter is nearly identical to the original Cushman part, and much cheaper.

Charley

itsjustathing · 05-14-2013, 09:07 PM

sc3283 · 05-14-2013, 10:58 PM

on the 735 models a "T" on the pressure side of fuel line @ carb is proper. Although Jeff's version is not stock...it can be made to work properly....
Jeff, put the return to the tank 90 degrees to the line coming from pump to carb...thus making a straight "in" flow to carb...the excess will then return to the tank

Carb looks to be a Keihin...not Carter Model N or Zenith...which tells me someone has swapped out the carb for a later model carb off another Cushman that had the Keihin carb...carb should still work fine on your engine.

OMC 18hp is correct and only engine used by Cushman in the 735 models (many have swapped to the 22hp version though)

I see your coils are up frt and not on the right head....do you have a ballast resistor in the 12v+ wire supplying voltage to the coils? If not you need 1.

12v+ goes from switched side of ig switch to the ballast resistor. From the resistor 2 wires go to each "+" post of each coil. The wire from the timer(distributor) connects to the "-" (neg) terminal on 1 of the coils....also that terminal at the coil connects to the other "-" (neg) post on the other coil

No ballast resistor will make the engine not want to idle also

Your cart is a 1963 or 1964 model year

Shoot me your email addy via PM..I can email you a wiring diagram, if my above explanation didn't make sense

san diego jeff · 05-16-2013, 11:36 PM

Thanks to all for the info. I will work on the hoses, and the T , plus check the issue of a ballast resistor. Yes, I know very little about this vehicle, just that I thought it was way to cool to leave it where I found it sitting on blocks.
I will go over everybodys suggestions and make the corrections and adjustments. Hopefully it will help.

Yes, it has the spark plugs underneath.

Another question. As some are saying this carburator is not the exact correct one; which one is the original correct one?

sc3283 · 05-17-2013, 11:14 PM

Cushman used 3 different carbs on the OMC 18hp and 22hp

Zenith
Carter
Keihin

all are correct and work fine BUT....as far as I know the 735s only used Zenith or Carter

the OMC18 and 22 were used in many different Cushman vehicles....the 22hp replaced the 18hp. The later 22hp I believe was usually equipped with the Keihin carbs

JcXtreme72 · 05-17-2013, 11:21 PM

I want it. Plain and simple. That thing is so unique.

sc3283 · 05-17-2013, 11:43 PM

JC, they are pretty cool stock...but after adding a 3 speed trans, hiway gears, air ride rear suspension, disc brakes.....they are REALLY fun!

05-14-2013, 09:09 AM	#2
san diego jeff Not Yet Wild Join Date: Mar 2013 Location: san diego california Posts: 13	Re: newbie with the 735 cushman pictures As you can see from the pics, all I've done is wipe the vehicle down, paint the 2 rear wheels, and add new rear tires. The paint job, which I really like, I plan to keep. No decisions on the seats yet. The rust is actually no more than surface rust and the floors are solid. I will clean the engine compartment once the engine is figured out and idles correctly. Clutch and brakes seem to work fine. Will clean and pack wheel bearings this weekend as well. ANY IDEAS AND HELP APPRECIATED.

05-14-2013, 11:31 AM	#3
CharleyL Gone Wild Join Date: Dec 2012 Location: Central North Carolina Posts: 527	Re: newbie with the 735 cushman pictures Great pictures! It looks like you have an OMC motor. Is it an 18 hp (spark plugs on the bottom) or the 22 hp (spark plugs on the top)? I'm not familiar with your Cushman model, but think you might have better fuel pressure to the carburetor if you replace the T in the fuel line with a bypass type fuel filter. These are available through the auto parts stores and I have the part number somewhere, but not here at the moment. They look like a standard inline tubular metal fuel filter, but have an L shaped line coming out of the side. This L is the bypass connection. These filters will increase the fuel pressure at the carburetor and yet let the excess fuel flow back to the tank. Your present connection wastes all of the fuel pressure by the direct connection from the T back to the tank. A bypass filter was standard for use with these OMC motors and it may help with your idling problems. Charley

05-14-2013, 06:58 PM	#4
CharleyL Gone Wild Join Date: Dec 2012 Location: Central North Carolina Posts: 527	Re: newbie with the 735 cushman pictures I used a Purolator F20036 bypass filter in my 87 truckster with the 22 hp OMC engine. It, or an equivalent in snother brand, should be available at any auto parts store. The Purolator filter is nearly identical to the original Cushman part, and much cheaper. Charley

05-14-2013, 09:07 PM	#5
itsjustathing Not Yet Wild Join Date: May 2013 Location: ct Posts: 11	Re: newbie with the 735 cushman pictures Wow

05-14-2013, 10:58 PM	#6
sc3283 Getting Wild Join Date: Oct 2010 Posts: 131	Re: newbie with the 735 cushman pictures on the 735 models a "T" on the pressure side of fuel line @ carb is proper. Although Jeff's version is not stock...it can be made to work properly.... Jeff, put the return to the tank 90 degrees to the line coming from pump to carb...thus making a straight "in" flow to carb...the excess will then return to the tank Carb looks to be a Keihin...not Carter Model N or Zenith...which tells me someone has swapped out the carb for a later model carb off another Cushman that had the Keihin carb...carb should still work fine on your engine. OMC 18hp is correct and only engine used by Cushman in the 735 models (many have swapped to the 22hp version though) I see your coils are up frt and not on the right head....do you have a ballast resistor in the 12v+ wire supplying voltage to the coils? If not you need 1. 12v+ goes from switched side of ig switch to the ballast resistor. From the resistor 2 wires go to each "+" post of each coil. The wire from the timer(distributor) connects to the "-" (neg) terminal on 1 of the coils....also that terminal at the coil connects to the other "-" (neg) post on the other coil No ballast resistor will make the engine not want to idle also Your cart is a 1963 or 1964 model year Shoot me your email addy via PM..I can email you a wiring diagram, if my above explanation didn't make sense
sc3283 Getting Wild Join Date: Oct 2010 Posts: 131

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05-16-2013, 11:36 PM	#7
san diego jeff Not Yet Wild Join Date: Mar 2013 Location: san diego california Posts: 13	Re: newbie with the 735 cushman pictures Thanks to all for the info. I will work on the hoses, and the T , plus check the issue of a ballast resistor. Yes, I know very little about this vehicle, just that I thought it was way to cool to leave it where I found it sitting on blocks. I will go over everybodys suggestions and make the corrections and adjustments. Hopefully it will help. Yes, it has the spark plugs underneath. Another question. As some are saying this carburator is not the exact correct one; which one is the original correct one?

05-17-2013, 11:14 PM	#8
sc3283 Getting Wild Join Date: Oct 2010 Posts: 131	Re: newbie with the 735 cushman pictures Cushman used 3 different carbs on the OMC 18hp and 22hp Zenith Carter Keihin all are correct and work fine BUT....as far as I know the 735s only used Zenith or Carter the OMC18 and 22 were used in many different Cushman vehicles....the 22hp replaced the 18hp. The later 22hp I believe was usually equipped with the Keihin carbs
sc3283 Getting Wild Join Date: Oct 2010 Posts: 131

05-17-2013, 11:21 PM	#9
JcXtreme72 Gone Wild Join Date: Jan 2011 Location: Las Vegas, Nevada Posts: 1,942	Re: newbie with the 735 cushman pictures I want it. Plain and simple. That thing is so unique.

05-17-2013, 11:43 PM	#10
sc3283 Getting Wild Join Date: Oct 2010 Posts: 131	Re: newbie with the 735 cushman pictures JC, they are pretty cool stock...but after adding a 3 speed trans, hiway gears, air ride rear suspension, disc brakes.....they are REALLY fun!
sc3283 Getting Wild Join Date: Oct 2010 Posts: 131

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