Replacing/Cleaning the S10 "Tea Bag" fuel filter to restore mileage & power + Guglatech Filter.

prowlnS10

2014 ES
Joined
Jul 13, 2018
Messages
69
Location
Vancouver, BC, Canada
Unfortunately Yamaha does NOT sell a replacement "tea bag" fuel filter despite it being a press on design that easily separates from the pump for cleaning. Another Yamaha Super Tenere Forum member (BWC) kindly published detailed pics & procedure of the pump removal in 2017 via this link: https://www.yamahasupertenere.com/index.php?threads/fuel-filters.23488/

So I won't repeat that info except to reiterate to be careful of the fuel sender unit & the necessity to carefully depress the small plastic tab slightly on the FP housing to clear the fuel tank opening during removal...once removed the fuel sender assembly can be removed from the plastic housing & the housing comes apart via releasing the tabs exposing the metal cased pump.

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Placing thin plastic between the housing locking tabs eases separation of the inner pump housing.

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Before Cleaning Pics: My 2014 ES has 35k km, of which the bike had a Guglatech fuel filter installed in the tank for the last 13k km, so this dirt build should be from the 1st 22k km using mostly Chevron Premium unleaded 91 and/or pre-existing tank sediment from manufacturing. Fuel mileage & performance had recently dropped off a little...all of which was restored after cleaning...so it demonstrates that it does not take much dirt to reduce the effectiveness of the pump, which in turn impacts the fueling & fuel pressure (if fuel pressure drops below the injectors threshold the bike will not run)....the falloff is gradual so many may not notice it..but I keep regular records of fuel mileage & could notice the power flatten off/plateau a little in the mid/upper rpms.

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After Cleaning Pics: I followed BWC's suggestions for back flushing the pump (which contains a small internal screen filter) & the tea bag, with cleaner fluid & then fresh gas, cleaning with a soft toothbrush & using low pressure air...then purging all contaminates by running the pump via cycling the ignition switch on, which pressurizes the pump for approx 4 sec, in a bucket of fresh gas until the output was clear...approx 1 litre...used the oem fuel line with quick connects for the outflow of purging fuel into a separate container.

Tips: take pics of each stage before disassembly to assist reassembly of parts in the correct orientation, sequence, location.
- ensure that the small black o-ring on the elongated white plastic fuel tube on the inside of the white plastic housing is correctly
seated (if not, there will not be enough fuel pressure to the injectors for the bike to run)
- be sure to insert the half moon shaped white plastic piece located near the tea bag attachment point correctly to allow the tea
bag filter to attach to the inlet tube correctly, if rotated 180 degrees it will sit elevated on the raised pump metal tabs preventing
the tea bag filter from correctly attaching to the inlet tube
- the fuel line hose will kink/bind if mounted in reverse direction or if rotated 180 degrees from the oem orientation when lowering
the tank (the quick connectors will attach to either the fuel injector rail or the fuel pump). Suggest only disconnecting the hose at
the fuel injector rail end...that will permit use of the hose attached to the fuel pump for testing & purging contaminates prior to
re-installation.

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Replacement Filters: This filter for Yamaha R1/R6/FZ6 (pic below) IS an identical match to the oem tea bag! Idle was smoother after installation of the new filter. https://www.aliexpress.com/i/32849361097.html $5.79 us / pkg of 2

2PCS-Gasoline-Strainer-Fuel-Pump-Filter-For-Yamaha-Motorcycle-R1-Yamaha-Motorcycle-R6-FZ8-Free...jpg

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Some have said a Suzuki #15420-05H00 filter (pic below) will fit, although it may lack the correctly oriented locating hole to prevent rotation & separation from the pump + not sure if the external dimensions are the same https://www.amazon.com/5PCSStrainer-Motorcycle-V-Strom-Gsxr1000-15420-05H00/dp/B07C1W3ZM2

Suzuki #15420-05H00 GSXR1000.jpg

Guglatech Filter: As previously mentioned I have been using a Guglatech fuel filter for the past 13k kms, which has remained clean since installed...so am curious to see how clean the fuel pump "tea bag" strainer remains. https://bestrestproducts.com/product-category/guglatech-fuel-and-air-filters/

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1st full tank (363 km or 225 miles on 18.8 L = 19.3 km/l or 54.5 imperial mpg...4.2 L remaining for theoretical range of 440 km or 273 miles) after cleaning filter using Canadian Shell V-Power 91 Premium Unleaded no ethanol = +1.6 km/litre or +4.5 imperial mpg!
 
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EricV

Riding, farkling, riding...
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Thanks for posting your efforts and results. It will be a good reference for others. FWIW, the same Chinese replacement filters are available on eBay as well. LINK
 

Cycledude

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Jan 29, 2016
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Rib lake wi
Where did all the dirt come from ? I wonder if it’s actually as bad as it looks ? 35K seems awfully early to need to mess with that filter.
I believe most gas station pumps have a filter that filters the gas as it’s pumped, my 2013 Tenere had 50,000 miles without ever messing with the filter, my Goldwing has a sock type filter inside the tank with 541,000 miles that has never been changed.
 
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prowlnS10

2014 ES
Joined
Jul 13, 2018
Messages
69
Location
Vancouver, BC, Canada
Where did all the dirt come from ? I wonder if it’s actually as bad as it looks ? 35K seems awfully early to need to mess with that filter.
I believe most gas station pumps have a filter that filters the gas as it’s pumped, my 2013 Tenere had 50,000 miles without ever messing with the filter, my Goldwing has a sock type filter inside the tank with 541,000 miles that has never been changed.
Yes, I wondered about the dirt/crap as well because I have mostly used Chevron Premium Unleaded & the Guglatech filter was installed 13k kms prior to this work & it was clean...so can only speculate that some of it must have been from pre-existing coating/sediment from manufacturing. The new KTM 790 Adventure has many reports of tank coating issues clogging filters & impacting fueling.
 

14kmtnman

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May 18, 2014
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476
Location
Yakima, WA
The cycling of the pump with fresh fuel is a great idea. Nice find on the replacement tea bags. That is the same process I went thru too. My tea bag filter looked the same at 38,000 miles. I replaced my pump & flushed out the non replaceable filter. The tea bag filter that came with the new pump was a little bit bigger, but it fit in the housing. I also had my injectors cleaned at the same time. The injectors were dripping because of the dirt. The next time I do the oil & filter change, I'll pull the Guglatech fuel filter and see what it looks like after 2-3k miles of use.
 

prowlnS10

2014 ES
Joined
Jul 13, 2018
Messages
69
Location
Vancouver, BC, Canada
The cycling of the pump with fresh fuel is a great idea. Nice find on the replacement tea bags. That is the same process I went thru too. My tea bag filter looked the same at 38,000 miles. I replaced my pump & flushed out the non replaceable filter. The tea bag filter that came with the new pump was a little bit bigger, but it fit in the housing. I also had my injectors cleaned at the same time. The injectors were dripping because of the dirt. The next time I do the oil & filter change, I'll pull the Guglatech fuel filter and see what it looks like after 2-3k miles of use.
This is proving to be a very effective cleaner for the entire fueling system....worth a try between professional cleaning.
51S1xVqPPEL._SL1000_.jpg
 

Tenman

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Dec 7, 2013
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Natchez Ms USA
I run fuel stabilizer called Pri-g. I've been running it in chainsaws and trucks for years. No fuel problems. My mower was popping and farting the other day. I gave it a dose and in 10 minutes. It was running good.
 

14kmtnman

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May 18, 2014
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Yakima, WA
I have used the $24 dollar a can BG fuel line cleaner a couple of times as well as Chevron Techron. Never really noticed a big difference in how the bike ran. The BG cleaner in the pickup truck made a huge difference the first time I used it.
 

Commuter Boy

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May 15, 2017
Messages
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Location
Halifax NS
From my experience in Suzuki Bandits using the tea bag filter above the filter will discolour very quickly even if it isn't blocked and restricting flow. Nice to see you had a positive result swapping yours out.
 

Scoti49

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Mar 29, 2019
Messages
33
All good info ,thanks .

I do my tea bag filter each service ,I don't and wont use additive .
But that's just me.

The only additive I've used and recommend is to get ride of Algae (Microbiological Contamination) was in trucks and Jet Airlines .
I used to pour a Biocide into Boeing 747-200 fuel tanks ( Biobor JF is an aviation biocide),then sit in the cockpit on nightshift, transferring fuel ,from tank to tank ,boring job .

Filters do need changing after Biocide .
I clean/change bikes and farm gear filters the same .
Algae loves water and fuel lines ,so clean out your tank often .

Algae appears just like the Tea bag filter seen above on prowlnS10's great Post .
Black sludge that's alive and hungry ...
 
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ocgeek

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Aug 20, 2019
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Italy
Great post thanks for sharing.
Subbed for future reference next round of maintenance
 

Tenman

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Dec 7, 2013
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Location
Natchez Ms USA
I cleaned mine at 53k miles. My mileage had been going down for the last year or so. No problems running. I gained 5 mpg. I get my gas 99% of the time at Murphy Walmart or Exxon. I stuck my XXlarge hand in the hole in the tank. Thought I was gonna have to go to the machine shop to get it cut out. Edit Make that 2 mpg better
 
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