Question about Britax Marathon

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New Britax Marathon harness straps

My son vomited on his harness straps and I was wondering if there was anywhere I could get new straps?

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Re: New Britax Marathon harness straps

Posted on Jul 23, 2008

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Need instructions for britax marathon L321000

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Sep 21, 2011 | Britax Marathon

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Carseat manuals

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Sep 16, 2008 | Britax Marathon

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My daughter seems to be very uncomfortable when in our Britax Marathon convertible car seat. She cries everywhere we go and tenses up her body and seems to be in pain. We can't figure out what is...

Well the first thing to ask the seat new, if so did she do this in previous seats. If the issue is new and the seat is one she did not have issues with before you can try to remove the cover to be sure nothing is poking her. Also if the straps are too snug around the thighs it will make for a rough ride for the child. If all else fails return it to the store and dont be afraid to bring her along to "Test" a different seat prior to buying it!

May 08, 2011 | Britax Marathon

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Where can I buy replacement britax car seat straps?

where can i buy a new bumper bar & a new harness strap for my britax ultra travel system it was bought 2003

Jul 23, 2009 | Britax Baby & Toddler Car Seats

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How do you raise the shoulder straps up to a higher level on the Britax Marathon carseat?

The straps must be undone from a claw on the underside of the car seat so you have to remove the whole thing from the car. The claw is designed to keep the straps in place and this it does very well but its position on the undercarraige leaves no room for your hands and makes it near impossible to manage.

Jun 13, 2009 | Britax Marathon

1 Answer

How to loosen the straps on envenflo tribute carseat?

This is about all I could find for you. Hope it helps.
Had one - its a huge pain in the **** and I always busted my fingernails doing it. The metal clips have to slide over the bumps to get them out. I hated that thing. May I make a suggestion? Return it. lol . I'm figuring you got a combo seat - Evenflo Generations, Bolero, Chase, that is a forward facing only seat to 40lbs, or a convertible seat like Evenflo Tribute that is forward facing to 40lbs. Since I don't know her age its hard to make a suggestion, but for just a little more money (we paid $79 for our Chase) you could get a much better seat. If she needs a convertible that will rear face, get the Evenflo Triumph for $150 or less, The Evenflo Triumph Advance (not the original Triumph, make sure it says Advance) is a great seat. $150 version at Babies R Us has padding similar to Britax seats, top slots of 17", harnesses to 35lbs rear facing, and 50lbs forward facing. $120 Walmart version just has little less plush padding. Wide open belt path, easy to install, though it doesn't have built in lockoffs. The harness adjusts at the front of the car seat, you don't have to take the car seat out of the car just to raise/lower the straps. It's one of only 2 seats that does this (The Britax Boulevard is the other, I believE), and it has infinite harness adjustment so the harness always fits perfectly until its outgrown. No more tugging straps to tighten them either. You tighten and loosen the harness using knobs on the side of the seat. As a major bonus, it can be used in a recline position even in forward facing mode. Awesome for kids who still sleep in the car. I LOVE THIS SEAT! LOL My son, who is too big for every other car seat at Walmart has the same amount of room in this as the Britax Marathon.

If she is forward facing (over 30lbs and over 2years old) then a Graco Nautilus would be a lot easier to use and install, $150. Harnesses to 65lbs and then becomes a booster, will be the last seat you have to buy her. Metal reinforced.

Combo seats are usually a major waste of money, as they only harness to 40lbs, no more than most convertible car seats, so you're really not getting any more use out them then the convertible seat.

Jun 12, 2009 | Evenflo Generations

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Help with install

Go here to download a copy of the manual.
The straps that are in the area where you'd thread the seatbelt to install are for LATCH installation if you have LATCH anchors in your car - but you can only use seatbelt OR LATCH to install, never both. The strap at the top, with the same hook, is the top tether.
Instructions for using both are in that copy of the manual - the installation instructions for the Regent vary depending on your child's weight, so read it carefully.

Feb 11, 2009 | Britax Regent

1 Answer

Help with install

There seems to be pretty good support (helps prevent lawsuits I suspect) here: 

Sep 13, 2008 | Britax Marathon

1 Answer

Britax Marathon convertible Carseat


Jul 23, 2008 | Britax Marathon

2 Answers

Britax marathon harness straps

how to make harness larger

Feb 21, 2008 | Britax Marathon

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