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Is this a primer “bulb”/ plunger? #5365927 03/03/20 05:19 AM
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dlundblad Offline OP
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I have an old Gilson rear tine tiller that was basically given to me. Sat for a while. Has a 5 horse twin crank Briggs.

Is this how you prime the engine? I can’t find any model, part numbers etc.

01AA20A2-2A91-4A1A-85CF-0A5F42D20630.jpegC4D77C1A-8B1A-4AA8-A589-E699E874290A.jpeg

03 Jeep WJ 4.0 208k
02 Volvo S60 2.4T 199k
97 Chevy Blazer 4.3 175k
04 Audi A4 3.0 210k

Re: Is this a primer “bulb”/ plunger? [Re: dlundblad] #5365936 03/03/20 05:51 AM
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Char Baby Online Content
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Well, push it and find out & let us know. However, it also looks like a fuel shutoff. But then, it's above the gas tank instead of below. Let us know! smile

Last edited by Char Baby; 03/03/20 05:53 AM.

Retired 6 yrs now & lovin' it
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Re: Is this a primer “bulb”/ plunger? [Re: dlundblad] #5365937 03/03/20 05:53 AM
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Being just below the air filter, I would say it is the choke. Pull off the air filter for a look.

Last edited by Lubener; 03/03/20 05:55 AM.

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Re: Is this a primer “bulb”/ plunger? [Re: Lubener] #5365939 03/03/20 05:53 AM
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Originally Posted by Lubener
Being just below the air filter, I would say it is the choke.


There ya' go!


Retired 6 yrs now & lovin' it
-----------------------------------

'80 Firebird FORMULA V8/4bbl-purchased "NEW"
'15 Nissan Altima 2.5 SV
'15 Honda Civic 1.8 LX
Re: Is this a primer “bulb”/ plunger? [Re: Lubener] #5365956 03/03/20 06:52 AM
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Trav Offline
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Originally Posted by Lubener
Being just below the air filter, I would say it is the choke. Pull off the air filter for a look.


+1 that's what it is.


ASE L1, Master. Deutsch Meisterbrief.
Re: Is this a primer “bulb”/ plunger? [Re: dlundblad] #5365961 03/03/20 07:07 AM
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It is the choke--pull out to crank and push in to run.

PS...given the state of greasiness, I would invest in a can of Berryman B-12 Chemtool and clean the outside and spray some down into the carb too.


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Re: Is this a primer “bulb”/ plunger? [Re: dlundblad] #5366050 03/03/20 08:52 AM
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Chris142 Offline
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Thats the choke. That engine does not use a primer bulb.


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Re: Is this a primer “bulb”/ plunger? [Re: dlundblad] #5366105 03/03/20 09:47 AM
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1978elcamino Offline
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Its def a choke, 100%. I had a gocart as a teen and and it dident have a kill switch. I used the choke lever in the picture to shut the engine down.

Re: Is this a primer “bulb”/ plunger? [Re: dlundblad] #5366131 03/03/20 10:22 AM
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JohnG Offline
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That's the choke.
When the engine doesn't start, check thhat the valves are not stuck open. That happens when an engine like that is stored in that manner.

Re: Is this a primer “bulb”/ plunger? [Re: Char Baby] #5366148 03/03/20 10:43 AM
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dlundblad Offline OP
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Originally Posted by Char Baby
Well, push it and find out & let us know. However, it also looks like a fuel shutoff. But then, it's above the gas tank instead of below. Let us know! smile


It’s seized. Figured I should know if it’s supposed to move before I add penetrating oil and force.


03 Jeep WJ 4.0 208k
02 Volvo S60 2.4T 199k
97 Chevy Blazer 4.3 175k
04 Audi A4 3.0 210k

Re: Is this a primer “bulb”/ plunger? [Re: 1978elcamino] #5366150 03/03/20 10:44 AM
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dlundblad Offline OP
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Originally Posted by 1978elcamino
Its def a choke, 100%. I had a gocart as a teen and and it dident have a kill switch. I used the choke lever in the picture to shut the engine down.


Does it rotate or move in and out?


03 Jeep WJ 4.0 208k
02 Volvo S60 2.4T 199k
97 Chevy Blazer 4.3 175k
04 Audi A4 3.0 210k

Re: Is this a primer “bulb”/ plunger? [Re: dlundblad] #5366267 03/03/20 01:19 PM
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The carburetor needs to be taken apart and cleaned. The gas tank may be rusty. The diaphragm needs to be replaced, it's hard.


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Re: Is this a primer “bulb”/ plunger? [Re: dlundblad] #5366286 03/03/20 01:42 PM
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mk378 Online Content
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It is push - pull don't rotate. It appears to be at or near the fully out (choked) position now. It's pretty obvious how it works if you look down the air intake. Be careful with solvent because there are several plastic and rubber parts. Some late production ones had the whole carb body made of plastic.

Re: Is this a primer “bulb”/ plunger? [Re: dlundblad] #5366289 03/03/20 01:44 PM
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FT92 Offline
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choke for sure

Re: Is this a primer “bulb”/ plunger? [Re: dlundblad] #5366796 03/04/20 05:25 AM
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dlundblad Offline OP
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Thanks everyone for the info. Sure wish I could find a model number.

Saw one a while back on eBay that looked identical with the twin output shaft, but didn’t realize I needed the model until after it was sold. Lol.


03 Jeep WJ 4.0 208k
02 Volvo S60 2.4T 199k
97 Chevy Blazer 4.3 175k
04 Audi A4 3.0 210k

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