Jerry Griego
  • Male
  • Socorro, NM
  • United States
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Jerry Griego's Discussions

912ULS muffler

Started Jul 20 0 Replies

I have a 912ULS stainless steel muffler , for ring mount for zenith 701. The muffler had a weld repair a couple of years ago. The weld repair needs repairing again. The repair is where exhaust tube…Continue


Started this discussion. Last reply by Bob Simmons May 18. 1 Reply

Fiberglass tail light and landing lights for Zenith 650Continue

Matco MC-5 Master Cylinders

Started this discussion. Last reply by Mike Holder Jul 22, 2018. 2 Replies

I have 2 never used MC-5 cylinders for sale $75.00 each buyer pays shipping. 1 Y stick for a 650$75.00. Continue


Started this discussion. Last reply by Rick Gutierrez Aug 13, 2018. 11 Replies

Y stick sold.Continue


Jerry Griego's Page

Latest Activity

Jerry Griego posted a discussion

912ULS muffler

I have a 912ULS stainless steel muffler , for ring mount for zenith 701. The muffler had a weld repair a couple of years ago. The weld repair needs repairing again. The repair is where exhaust tube #4 enters the muffler. A new muffler from zenith is almost $1000.00. I will accept $700 and you pay shipping.See More
Jul 20
Jerry Griego posted a discussion


Fiberglass tail light and landing lights for Zenith 650See More
May 14
Jerry Griego posted a status
"Bolt on 7 gallon fuel tanks for the 701, my wing kit from 12 years ago came with them , does anyone else have them?"
Feb 7, 2021
Jerry Griego posted a status
"Rotax 912uls fuel return line to fuel supply before gascolator is causing fuel to come out of only one tank during flight. What can I do?"
Mar 8, 2020
Jerry Griego posted a status
"912 ULS . Burns 6 GPH. 14 gal. on board. adding 2 - 10 gal.AUX wing tanks to my 701.anybody have some advice before i cut open the wings."
May 26, 2019

Profile Information

Aircraft Model
STOL CH 701, Zenith CH 650
Project Status
Building From
Engine installed (or plan to install)
Rotax 912
Building Experience
No Experience
Flying Experience
Sport Pilot (or Ultralight)
Building and Flying Info / Your Profession / Other Background Info
Electrical Contractor
Home Airport (ie. KMYJ)

Progress from beginning August 2010

Rudder Starter kit built, February 2010

Photos attached will be a record of my progress from beginning in August 2010.

Jerry Griego's Photos

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Jerry Griego's Blog

Dual throttle Rotax 912ULS

Posted on March 31, 2019 at 10:36pm 2 Comments

I have a dual throttle setup on my 701 with a Rotax 912ULS This is the kit that zenith provides with two cables. There seems to be a lot of pressure pulling the two throttle arms on the carbs back to full. If I take my hand off the throttle it will advance the RPM greatly. I have to tighten the throttle lock down very hard to stop this action. Rotax says not to change the carb springs. I took the springs off to see if it was a cable issue , but no problem with the cables. I did reattach the…


701 cabin heat install

Posted on June 12, 2014 at 11:35pm 3 Comments

I need help on how to make the mixer lever move smooth. I made several triangle horns to make it work. the whole thing gets stuck open or closed at times

I have spent too many hours on this task which I thought would be easy. HELP

Pictures would be nice.

firewall Boots 701

Posted on January 6, 2014 at 6:34pm 6 Comments

Is there some type of boot for the two threaded rods that control the front nose wheel? Trying to keep engine compartment smells from entering the cabin area.

Liquid cooled Heads for Jabiru engines. I just heard about them. Does anyone have any info of this new cooling system?

Posted on May 21, 2011 at 2:32pm 9 Comments

Liquid cooled Heads for Jabiru engines. I just heard about them. Does anyone have any info of this new cooling system?

Comment Wall (11 comments)

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At 9:06am on January 16, 2019, David Orr said…

Here is the link to Roger’s “gear check video”.

At 8:06pm on January 7, 2014, ulis temos said…
The numbers I posted are steering boots for a 2001 Yamaha mountain max snow mobile. One number is the rubber boot and the number the metal ring to attach to the fire wall. Keep working on your 701 you will enjoy flying it. If you like I can send you a photo.
At 6:45am on January 7, 2014, ulis temos said…
Steering boots for 2001 mountain max yam 8cr-2198f-00.00 plus cover 8cr2195e-00.00
At 7:14pm on August 27, 2013, Joey Cirri said…

Howdy Jerry and thanks for the welcome. Hows the flight training coming? I am a CFI and soon I should have some hours of 701.

At 6:36am on April 14, 2012, Phillip King said…

Hi Jerry i pulled out my EA -81 to heavy, will be flying off my paddock so i want my plane to be as light as i can get it.I picked up a low time jab at a good price.Do you no any body flying a jab powerd 701 would like to no how it performs.

cheers Phil

At 4:18pm on February 5, 2012, Ralph Sanson said…


        #609 is very early and most engines of that time have since had later version heads fitted for better cooling.

Some engines run well for reasonable times and it may be a case for leaving alone. 

You need to check what changes had already been done, if its already run 367 hrs the way to check for the scuffed piston skirts is to ground run at around 1800 rpm for 2 mins then shut down, if the prop stops quickly without springback and is stiff to rotate by hand then its a candidate for the cylinder basenuts and hone the barrels job. This is explained better by Roger Lewis on the Jabiru Yahoo group.

In the 701 depending on cowling, cooling of the heads is likely the first issue you will need to get right

The prop I use is 64" x 30"  its pictured on my page photos made by Brent Thompson Props


At 1:46pm on January 15, 2012, John F. Schaefer said…

Hi Jerry.  Not done, but about to finally get the doors on the hanger.  Will then move 701 to N29 and put the wings on.  Let me know when you (if you) ever get to Magdalena.  Best, jfs

At 4:35pm on March 8, 2011, Bob Hassel said…

Yeah to bad we can't be paid for building!

Sounds like great progress.  Which Jan are you going with, the 2200?

At 9:42am on March 6, 2011, Bob Hassel said…
Hi Jerry - how's the build/flying going?
At 3:53pm on January 17, 2011, John F. Schaefer said…
Was that you in El Camino on 2 January:  So spiffy I did not immediately recognize you...

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