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Model: 2012+ Polaris Sportsman 850 XP , 850 EPS 4X4 Utility ATV
Stock or oversized tires, Altitude adjustable.
Kit #: DP 850 -12
Components
:
1 Dalton Orange/Silver primary spring
1 Dalton Grey/Orange secondary Spring
1 set of Dalton Quick Adjust flyweights/hardware
10 pcs.M5x 12mm long (1.2g each)
4 pcs.M5x 6mm long (0.6 g each)
1 pkg aluminum rivets ( .85gram)
1 pkg hollow steel rivet (Silver short steel, 1.8g ) optional for use only if necessary eg: hitting rev limiter with weight
fully loaded.
Tools
:, Primary clutch puller bolt is recommended . A primary clutch puller makes for easier drive clutch service if you
intend to do more clutch work in future(maintenance), or remove the drive clutch for easier work and inspection.. Polaris
dealers have them or can order Dalton part # DCP-M. (This model/kit is dealer installation recommended)
Description :
Optimum CVT clutch calibration for the Polaris Sportsman 850 XP 4 x 4
One clutch kit that can be set up for different terrain and tires sizes/elevation means accurate clutch tuning for your situation.
Improved acceleration and performance in bottom and midrange, better clutch reaction to load conditions.
This kit includes Dalton's patented "Quick Adjust" flyweight system that allows you to add or subtract weight from the
flyweights without even removing the flyweights from the drive clutch. Instead of using generic flyweights or designs from
OEM snowmobiles or regular ATV models ,extensive testing lead to development of a new custom base flyweight specific
to this model. The new "Quick Adjust" flyweight in this kit has a different curvature ,and location of mass which allows
superior belt grip and RPM control .
that the total GRAMS you use of flyweight mass are irrelevant to other flyweights
misconception in the market as to comparing flyweights by only "grams".
-Ultimate RPM control (can be easily adjusted for modifications)
-Stock tires or oversized
-Altitude adjustable
-New custom SP 850 specific flyweight profile
-Set up manual includes set up instructions for above applications.
PLEASE READ ALL INSTRUCTIONS CAREFULLY FIRST!
This model is a Dealer installation and has reference to the Polaris service manual.
Dealer -Please take the time to thoroughly read and understand these pages before continuing.
An unqualified person installing could cause damage to driveline components and/or injury.
Dalton Pro ATV Clutch Kit
Having a different curvature and location of mass on the flyweight means
DP 850-12
(DPPS-O/S)
(DPSS-GY/O)
(QP93 series,59.5g base, custom curvature=different gr req'd)
(DFRA-Y)
, there is a common
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Summary of Contents for Dalton DP 850-12
- Page 1 Improved acceleration and performance in bottom and midrange, better clutch reaction to load conditions. This kit includes Dalton’s patented “Quick Adjust” flyweight system that allows you to add or subtract weight from the flyweights without even removing the flyweights from the drive clutch. Instead of using generic flyweights or designs from OEM snowmobiles or regular ATV models ,extensive testing lead to development of a new custom base flyweight specific to this model.
- Page 2 Clutch components should only be installed by factory trained mechanics and personnel with a complete knowledge of variable rate belt transmission systems or CVT’s. There are references to parts diagrams and service manuals. Dalton Pro clutch components are made from high quality materials in a controlled procedure. Do not modify components.
- Page 3 5) You will next be removing primary center bolt. **Note: left hand thread on primary motor clutch center bolt. Remove center bolt. Keep the spacers/washers on the bolt and set the primary bolt aside. 6) Thread the primary clutch puller into the drive clutch and remove drive clutch now. Mark the cover for location during re-assembly.
- Page 4 OVERVIEW - and general CVT tuning There are books written on CVT clutch tuning and some in depth principals of controlling the rate of shift of the belt on belt drive systems. The following is a very general guide to help those unfamiliar with understanding some basic principals of the system.
- Page 5 Dalton Pro Quick Adjust Cam Arms - Adjustable flyweights. Dalton’s patented quick adjust method means that you can add and subtract flyweight mass from the main body of the flyweight without removing the weights from the drive clutch.
- Page 6 FLYWEIGHT SET UP GUIDE – 2012+ Polaris 850 XP Springs. The primary and secondary springs provided in this kit are to be used in all of the flyweight set ups below. Proper opposing spring pressures are a part of the calibration and without that the flyweight set up would be irrelevant. Primary (motor clutch) springs have some engagement options.
- Page 7 Installation and removal of Mass Rivet (tip weight) 1) Push and hold the rivet ALL the way into the appropriate hole in the tip of the flyweight.(all same direction) 2) Using a large shop vise hold the weight in a manner in the vise that holds the rivet all the way through the hole , the rivet should expand as it is pressed.
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